EXAR CORP
S-3, 1995-08-02
SEMICONDUCTORS & RELATED DEVICES
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As filed with the Securities and Exchange Commission on August 1, 1995
Registration No. 33-

                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
                                    FORM S-3
                             REGISTRATION STATEMENT
                                     Under
                           THE SECURITIES ACT OF 1933
                                EXAR CORPORATION
             (Exact name of registrant as specified in its charter)
       Delaware               3674                94-1741481
     (State or other     (Primary Standard     (I.R.S. Employer
     jurisdiction of     Industrial            Identification Number)
     incorporation or    Classification Code
     organization)       Number)
                                2222 Qume Drive
                           San Jose, California 95131
                                 (408) 434-6400
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                           Thomas R. Melendrez, Esq.
                                EXAR CORPORATION
                                2222 Qume Drive
                           San Jose, California 95131
                                 (408) 434-6400
    (Name, address, including zip code, and telephone number, including area
                          code, of agent for service)
                                   Copies to:
                              Peter F. Stone, Esq.
                             COOLEY GODWARD CASTRO
                               HUDDLESON & TATUM
                             Five Palo Alto Square
                          Palo Alto, California 94306
                                 (415) 843-5000
        Approximate date of commencement of proposed sale to the public:

   As soon as practicable after the Registration Statement becomes effective.
If  the  only  securities being registered on this Form are  being  offered
pursuant  to  dividend  or interest reinvestment plans,  please  check  the
following box.   "

If any of the securities being registered on this Form are to be offered on a
delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box.

If  this  form is filed to register additional securities for  an  offering
pursuant  to  Rule  462(b)  under  the Securities  Act,  please  check  the
following box and list the Securities Act registration statement number  of the
earlier effective registration statement for the same offering.    "
If  this  form is a post-effective amendment filed pursuant to Rule  462(c)
under  the  Securities Act, check the following box and list the Securities Act
registration  statement number of the earlier  effective  registration statement
for the same offering.   "

If  delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.   "

                        CALCULATION OF REGISTRATION FEE

                                            Proposed
                               Proposed     Maximum
Title of                       Maximum      Aggregate       Amount
Securities to be  Amount to be Offering     Offering Price  ofRegist
Registered        Registeres   Price per    (1)             ration
                               Share (1)                    Fee

Common Stock,
$.0001 par        43,334       $31.50       $1,365,021      $470.70
value.....


 (1)Estimated  solely  for  the purpose of calculating  the  amount  of  the
registration  fee based on the average of the high and low sales  prices on the
Nasdaq National Market on July 25, 1995.

The Registrant hereby amends this Registration Statement on such date or dates
as may be necessary to delay its effective date until the Registrant shall file
a further  amendment  that  specifically  states that this Registration
Statement shall thereafter become effective in accordance with Section  8(a) of
the Securities Act of 1933 or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.

                               TABLE OF CONTENTS

                                                  Page

Available Information                             2
Additional Information                            2
Incorporation of Certain
   Documents by Reference                         2
Risk Factors                                      3

Use of Proceeds                                   5
Selling Stockholders                              6
Plan of Distribution                              7
Legal Matters                                     7
Experts                                           7


Information contained herein is subject to completion or amendment.  A
registration statement relating to these securities has been filed with the
Securities and Exchange Commission.  These securities may not be sold nor may
offers to buy be accepted prior to the time the registration statement becomes
effective.  This prospectus shall not constitute an offer to sell or the
solicitation of an offer to buy nor shall there be any sale of these securities
in any State in which such offer, solicitation or sale would be unlawful
prior to registration or qualification under the securities laws of any
such State.


                   Subject to Completion, dated August 1, 1995

                                   PROSPECTUS

                                 43,334 Shares



                                EXAR CORPORATION


                                  Common Stock

This  Prospectus relates to 43,334 shares of Common  Stock,  par value $.0001
(the "Common Stock") which are being offered and sold  by certain  stockholders
(the "Selling Stockholders") of Exar Corporation (the  "Company").   The
Selling  Stockholders,  directly  or  through agents,  broker-dealers or
underwriters, may  sell  the  Common  Stock offered hereby from time to time on
terms to be determined at the time of sale, in transactions on the Nasdaq
National Market or in privately negotiated  transactions.  The Selling
Stockholders  and  any  agents, broker-dealers or underwriters that participate
in the distribution of the Common Stock may be deemed to be "underwriters"
within the meaning of  the  Securities  Act  of 1933, as amended  (the  "Act"),
and  any commission received by them and any profit on the resale of the Common
Stock purchased by them may be deemed to be underwriting discounts  or
commissions under the Act.  The Company will not receive any  proceeds from  the
sale of shares by the Selling Stockholders.   See  "Selling Stockholders" and
"Plan of Distribution."

The Common Stock of the Company is quoted on the Nasdaq National Market under
the symbol "EXAR."  The last reported sales price of  the Company's Common Stock
on the Nasdaq National Market on July 28, 1995 was $38.00 per share.
 
 THIS OFFERING INVOLVES A HIGH DEGREE OF RISK.  SEE "RISK FACTORS" ON PAGE 3.
         THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
           SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
           COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION
               OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
                 ACCURACY OR ADEQUACY OF THIS PROSPECTUS.  ANY
                      REPRESENTATION TO THE CONTRARY IS A
                               CRIMINAL OFFENSE.


No underwriting commissions or discounts will be paid by the Company  in
connection with this offering.   Estimated  expenses payable  by  the  Company
in connection with  this  offering  are $15,000.  The aggregate proceeds to the
Selling Stockholders from the  Common Stock will be the purchase price of the
Common  Stock sold  less  the  aggregate agents' commissions and  underwriters'
discounts, if any.  See "Plan of Distribution."

The   Company   has  agreed  to  indemnify   the   Selling Stockholders,  and
the  Selling  Stockholders  have  agreed   to indemnify  the  Company  against
certain  liabilities,  including liabilities under the Act.


August      1995
       ----

                             AVAILABLE INFORMATION

The  Company  is subject to the reporting requirements  of  the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and  in accordance
therewith, files annual and quarterly reports, proxy  statements and other
information with the  Securities  and Exchange  Commission  (the "Commission").
Such  reports,  proxy statements and other information may be inspected and
copied  at the  Commission's  Public Reference Section,  450  Fifth  Street,
N.W.,  Room  1024,  Washington, D.C. 20549, as  well  as  at  the Commission's
Regional  Offices at 7  World  Trade  Center,  13th Floor,  New  York, New York
10048; and 500 West  Madison  Street, Suite  1400,  Chicago,  Illinois  60661-
2511.   Copies  of   suchmaterial  can  be  obtained at prescribed rates from
the  Public  Reference  Section of the Commission at 450 Fifth  Street,  N.W.,
Washington,  D.C.  20549.  The Common Stock  of  the  Company  is quoted  on
the  Nasdaq  National  Market.   Reports  and   otherinformation  concerning
the Company  may  be  inspected   at  the National  Association  of  Securities
Dealers,  Inc.  at  1735  K Street, N.W. Washington, D.C. 20006.

                             ADDITIONAL INFORMATION

A registration statement on Form S-3 with respect to the Common Stock  offered
hereby  (the "Registration Statement")  has  been filed  with  the Commission
under the Act.  This Prospectus  does not contain all of the information
contained in such Registration Statement  and  the  exhibits  and  schedules
thereto,   certain portions  of  which have been omitted pursuant to the  rules
and regulations  of  the  Commission.  For further  information  with respect
to  the  Company and the Common  Stock  offered  hereby, reference is made to
the Registration Statement and the  exhibits and  schedules thereto.  Statements
contained in this  Prospectus regarding the contents of any contract or any
other documents are not  necessarily  complete and, in each  instance,
reference  is hereby made to the copy of such contract or document filed as  an
exhibit   to   the  Registration  Statement.   The   Registration Statement,
including exhibits thereto, may be inspected  without charge at the Commission's
principal office in Washington,  D.C., and  copies of all or any part thereof
may be obtained  from  the Public  Reference  Section, Securities and  Exchange
Commission, Washington, D.C., 20549, upon payment of the prescribed fees.

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
  The  following  documents,  filed  or  to  be  filed  with  the Commission
under  the  Exchange Act are hereby  incorporated  by reference into this
Prospectus:

     (i)  The Company's Annual Report on Form 10-K for the fiscal year ended
March 31, 1995;

     (ii) The Company's quarterly report on form 10Q for the quarter ended June
30, 1995;

      (iii)    The Company's Proxy Statement for its annual meeting of
stockholders to be held on August 31, 1995 (other than the  portions thereof
identified as not deemed filed with the Commission; and

     (iv) The Description of Capital Stock contained in the Company's  Form  S-3
Registration  Statement  filed   with   the Commission on May 18, 1995.

All  documents filed by the Company pursuant to Sections 13(a), 13(c),  14  or
15(d) of the Exchange Act after the date  of  this Prospectus and prior to the
termination of the offering shall  be deemed  to be incorporated by reference
herein and to be  a  part hereof  from the date of filing of such documents.
Any statement contained  in  this Prospectus or in a document  incorporated  or
deemed to be incorporated by reference herein shall be deemed  to be  modified
or superseded for purposes of this Prospectus to the extent  that  a statement
contained herein or in any subsequently filed  document which also is or is
deemed to be incorporated  by reference herein modifies or supersedes such
statement.  Any such statement  so modified or superseded shall not be deemed,
except as  so  modified  or superseded, to constitute  a  part  of  this
Prospectus.

The  Company  will  provide  without  charge  to  each  person, including  any
beneficial  owner, to  whom  this  Prospectus  is delivered, upon written or
oral request of such person, a copy of any  and  all  of  the documents that
have been  incorporated  by reference herein (not including exhibits to such
documents unless such  exhibits are specifically incorporated by reference
herein or  into  such documents).  Such request may be directed to  Exar
Corporation,  Attention:  Thomas R. Melendrez,  Esq.,  2222  Qume Drive, San
Jose, California 95131, telephone (408) 434-6400.

                                  THE COMPANY

The  Company  was  incorporated  in  California  in  1971  and reincorporated in
Delaware in October 1991.  Unless  the  context otherwise  requires,  references
in  this  Prospectus   to   the "Company"   or   "Exar"  refer  to  Exar
Corporation   and   its subsidiaries.   The Company's executive offices  are
located  at 2222  Qume  Drive, San Jose, California 95131, and its  telephone
number is (408) 434-6400.

                                  RISK FACTORS

In  addition  to  the  other information  in  this  Prospectus, prospective
investors should consider the following  factors  in evaluating  the  Company
and its business before  purchasing  any shares of the Common Stock hereby
offered.

Integration  of Operations.  Since May 1994, Exar has  acquired four  companies
in separate transactions.  Most  recently,  Exar acquired  Silicon
Microstructures,  Inc.  ("SMI")  through   the purchase  of  all of the
outstanding capital stock  of  SMI  (the "Transaction")  pursuant to that
certain Agreement  and  Plan  of Reorganization  among Exar, SMI, Rohm
Corporation  and  James  W. Knutti,  Henry  V.  Allen  and Rohm U.S.A.  Inc.
(the  "Plan  of Reorganization").  If Exar is to realize the anticipated
benefits of  these acquisitions, the operations of these companies must be
integrated   and   combined   efficiently.    The   process    of rationalizing
supply  and distribution  channels,  computer  and accounting  systems  and
other  aspects  of  operations,   while managing a larger entity, will present a
significant challenge to the  management  of  Exar.  There can be no  assurance
that  the integration  process will be successful or that  the  anticipated
benefits  of these business combinations will be fully  realized. The
dedication of management resources to such integrations  may detract  attention
from the day-to-day business  of  Exar.   The difficulties  of  these
integrations may  be  increased  by  the necessity  of  integrating  personnel
with  disparate   business backgrounds  and  combining different corporate
cultures.   There can  be  no  assurance that there will not be  substantial
costs associated with such activities or that there will not  be  other material
adverse  effects  of these integration  efforts.   Such effects could materially
reduce the short-term earnings of  Exar. Exar  expects to incur a charge in its
first quarter  ended  June 30, 1995, currently estimated to be $2.0 million to
$2.5 million, to reflect the write-off of purchased SMI in-process research and
development.  This amount is a preliminary estimate only  and  is therefore
subject  to  change.  In addition,  there  can  be  no assurance  that  Exar
will  not  incur  additional  charges   in subsequent  quarters  to  reflect
costs  associated  with  these acquisitions.  The integration and efficient
combination  of  the operations  of these companies will present increased
challenges to Exar's management due to Exar's obligations to operate some of
these  companies in a number of fundamental respects as  separate business
entities.   Such  restrictions  on  Exar's  ability  to completely  integrate
the  operations  of  these  companies  may present  unforseen business
difficulties, for example, by further complicating  the  rationalization  of
supply  and  distribution channels,  accounting systems and other aspects of the
companies' operations.    Moreover,  such  restrictions  may   further   tax
management's resources and detract attention from the  day-to-day business of
Exar.  There can be no assurance that there will  not be  additional costs
associated with such efforts or  that  other material  adverse  effects will not
result.  Such  effects  could further reduce the short-term earnings of Exar.

  Factors Affecting Operating Results.  Exar believes its  future operating
results  will  be  subject  to  quarterly  and  annual variations based on a
wide variety of factors, including customer demand  for  Exar's products,
changes in product mix, competitive pressures  on prices and prices charged by
Exar's suppliers.  The semiconductor  industry has historically  been
characterized  by business  cycles, with economic downturns resulting in
diminished
product  demand  and erosion of average selling  prices.   Exar's future
operating  results  could  be  adversely  affected  by  a downturn in this
market or by the failure of one or more  of  its customers to compete
successfully in such market. The markets for components  used  in  personal
computer and consumer  electronics products are extremely price competitive.

Dependence  On  New  Products.  Exar's operating  results  will depend  to  a
significant extent on its ability to  continue  to introduce new products. In
particular, the consumer markets being addressed  by  Exar  are characterized by
shorter  product  life cycles  and  more  rapid technological change  than  the
markets traditionally  addressed  by Exar.  The  success  of  Exar's  new
products will depend on several factors, including the ability to anticipate
customer  requirements, timely  introduction  of  new products  to the market
and market acceptance. There  can  be  no assurance   that   Exar's  new
products  will  be   successfully developed,  or  will  receive  or  maintain
substantial   market acceptance.

Discontinuation of Product Line.  In May 1995,  Exar  announced the
discontinuance  of  its  mass  storage  product   line,   a historically  low
margin business.  In the year ended  March  31, 1995,  sales  of  mass  storage
products were  approximately  $20 million  and  the product line generated a
small operating  loss. The  Company  is currently evaluating the assets
associated  with this   product   line  and  other  costs  associated   with
the cancellation  of these products.  There can be no assurance  that Exar will
be able to efficiently utilize these assets in existing or  new  product lines.
Exar has made a claim against its foundry supplier for recovery of write-offs it
may incur related  to  the termination of this product line.
Dependence  On  Outside  Fabrication Facilities.   All  of  the semiconductor
wafers used in the manufacture of Exar's  products are processed to Exar's
specifications by outside suppliers.   In particular, Rohm Corporation ("Rohm")
is Exar's primary source of CMOS  wafers and BiCMOS wafers and Exar's sole
source of  bipolar wafers.   Exar  has  generally received  adequate  deliveries
of wafers  and  adequate  yield and quality  of  product.   Rohm  is
contractually  obligated  to  supply  Exar  with  bipolar  wafers pursuant  to a
long-term agreement and has committed  to  provide Exar with wafers at a price
that is commercially favorable.   The parties  are finalizing an agreement for
the supply of  CMOS  and BiCMOS  wafers.  However, if for any reason wafer
shipments  were delayed or its suppliers encountered yield or quality problems
in the future, Exar's operating results would be adversely affected. In
addition, because Exar has not qualified second  sources  for many of its
products, Exar would encounter lengthy delays if  for any  reason  it was forced
to establish alternative manufacturing arrangements.

  Pursuant to the same agreement, Rohm is contractually obligated to  provide
foundry  services for the  SMI  business.   The  SMI business  is dependent upon
Rohm for certain processing steps  so if  for  any  reason Rohm was delayed or
unable to perform  these services, the SMI business would be adversely affected.

 While Exar believes that it has an adequate wafer supply to meet its  currently
anticipated needs, there can be no assurance  that in  the  future Exar will
receive sufficient quantities of wafers at   favorable   prices  on  a  timely
basis.   If   the   wafer manufacturers  which  Exar  currently  uses  to
manufacture  its products  suffer  a  material curtailment of their
manufacturing operations,  Exar  could incur manufacturing  delays  of  between
three  and six months.  Although Exar believes that there  is  an adequate
level  of  high  quality wafer  manufacturing  capacity available world-wide
which could perform manufacturing  for  Exar in  those circumstances, there is
no assurance that Exar would be able to arrange sufficient alternative
manufacturing capacity  on comparable  terms  or  within that time  period  if
its  current suppliers  curtailed  or  halted  manufacturing.   Should   wafer
capacity limitations occur because of increased demand for Exar's products or
otherwise, Exar may be unable to meet demand for  its products  in  a  timely
fashion, which could result  in  customer dissatisfaction and decreased
revenues.

  Litigation  and  Patents.  As is typical in  the  semiconductor industry,
Exar has from time to time received, and  may  in  the future  receive,
communications  from  third  parties  asserting patent  rights, copyrights or
other intellectual property  rights covering Exar's products or processes.
There can be no assurance that  other intellectual property claims will not be
made against Exar, or that any such claims or litigation proceedings will  not
be   decided  against  Exar.  In  order  to  continue  using  the technologies
subject to such claims, Exar  may  be  required  to obtain  licenses  and  make
royalty payments.  There  can  be  no assurance  that  Exar  will be able to
obtain  such  licenses  on commercially reasonable terms.

  Key Personnel.  Exar's future success depends in large part  on the  continued
service of certain of Exar's  key  technical  and management personnel and on
Exar's ability to continue to attract and retain qualified employees,
particularly those highly skilled design, process and test engineers involved in
the manufacture of existing  products  and  the  development  of  new  products
and processes. The competition for such personnel is intense, and the loss  of
key  employees, most of whom  are  not  subject  to  an employment  agreement
for a specified term or  a  post-employment non-competition  agreement, could
have  a  material  and  adverse effect  on  Exar.  Exar has employment
agreements with  James  W. Knutti and Henry V. Allen, the founders of SMI, for
three years.

  Environmental  Regulations.  Exar is subject to  a  variety  of federal, state
and local governmental regulations relating to the purchase,  storage, use,
release and disposal of toxic,  volatile or  otherwise hazardous chemicals.
Although Exar believes that it has all permits necessary to conduct its
business, the failure to comply  with  present or future regulations could
result  in  the imposition of fines on Exar.  Exar and certain other parties
are currently  involved  in a dispute with Siemens  Components,  Inc. arising
out  of  alleged groundwater releases  of  environmental contaminants  by  Exar
at a site formerly  occupied  by  Exar  in Sunnyvale,  California.  Exar is also
involved in  a  groundwater contamination and clean-up matter relating to a
Santa Clara  site that  is  presently  occupied by Exar.  Although  Exar  does
not believe that these matters will have a material adverse effect on Exar's
business, there can be no assurance that there will not be such an adverse
effect.

  Dependence  on  Assembly Subcontractors.  Exar's  products  are currently
assembled  to  Exar's  specifications  by  independent subcontractors.   Exar's
reliance on subcontractors  to  assemble its   products  involves  significant
risks,  including  reduced control  over delivery schedules, the potential lack
of  adequate capacity    and   potential   misappropriation   of   proprietary
intellectual property.  Failure to obtain products  on  a  timely basis  could
delay product delivery to Exar's customers,  thereby materially  adversely
affecting Exar's businesses.  In  addition, Exar   presently  utilizes
semiconductor  assembly   contractors located  throughout  Asia.  Offshore
assembly  operations  entail certain   political  and  economic  risks,
including   political instability and expropriation, currency controls and
changes  in tax laws, tariffs and freight rates.  Exar's operations could  be
materially  adversely  affected if the operations  of  any  major supplier are
interrupted, or if air transportation from  Asia  is disrupted, for a
substantial period of time.

 Variation in Production Yields.  The manufacture and assembly of semiconductor
products is highly complex and sensitive to a  wide variety  of factors,
including the level of contaminants  in  the manufacturing environment,
impurities in the materials  used  and the   performance  of  manufacturing
personnel  and   production equipment.  No assurance can be given that Exar or
its  suppliers will  not  experience yield problems in the future,  which  could
result  in  a  material  adverse  effect  on  Exar's  results  of operations.
See  " Dependence  on  Outside   Fabrication Facilities."

  Intense  Competition.  The semiconductor industry is  intensely competitive
and  is  characterized  by  price  erosion,   rapid technological change and
heightened international competition  in many   markets.    Exar   competes
with   major   domestic   and international  semiconductor  companies,  many  of
which   have substantially  greater financial and other  resources  than  Exar
with  which  to pursue engineering, manufacturing, marketing  and distribution
of their products.  New entrants may also  increase competition in the
semiconductor market.  The ability of Exar  to compete  successfully in the
rapidly evolving area of  integrated circuit technology depends on factors both
within and outside  of its  control,  including success in designing and
subcontracting the  manufacture of new products that implement new technologies,
adequate  sources of raw materials such as wafers  and  plastics, protection  of
Company  products  by  effective  utilization  of intellectual  property laws
and other security measures,  product quality,  reliability, price, efficiency
of production, the  pace at  which  customers incorporate Exar's integrated
circuits  into their  products,  success of competitors'  products  and  general
economic  conditions.  There is no assurance that  Exar  will  be able to
compete successfully in the future.

  Foreign  Trade  and  Currency Exchange.  Approximately  74%  of Exar's
revenues in fiscal 1994 and approximately 61%  in  fiscal 1995, were derived
from sales to foreign customers.  In addition, although a majority of Exar's
manufacturing is done domestically, Exar purchases its assembly services from
foreign subcontractors. Both the manufacture and sale of Exar's products may be
adversely affected   by   political   or   economic   conditions    abroad.
Protectionist  trade legislation in either the United  States  or foreign
countries  could  adversely  affect  Exar's  ability  to manufacture  or  to
sell in foreign markets.   Even  though  Exar primarily  transacts business
internationally  in  United  States currency  (except  for  Japan, where Exar
transacts  business  in Japanese  Yen),  currency exchange fluctuations in
countries  in which  Exar  does  business (other than Japan)  could  materially
adversely  affect  Exar  by resulting  in  pricing  that  is  not competitive
with prices denominated in local currencies.  The Company generally enteres into
foreign currency contracts to hedge currency exposure in Japan.

  Possible  Volatility of Stock Price.  Since the initial  public offering of
Exar Common Stock in 1985, the market value  of  Exar Common  Stock  has been
subject to significant fluctuation.   The market  price of Exar Common Stock may
continue to be subject  to significant  fluctuations in response to  operating
results  and other factors.  In addition, the stock market in recent years has
experienced  price and volume fluctuations that often  have  been unrelated  or
disproportionate to the operating  performance  of companies.   These
fluctuations, as well as general economic  and market conditions, may adversely
affect the market price of  Exar Common Stock.


                                USE OF PROCEEDS

  The  Company  will not receive any proceeds from  the  sale  of Common Stock
by the Selling Stockholders in the offering.

                              SELLING STOCKHOLDERS

  The  following  table  sets forth  the  names  of  the  Selling Stockholders,
the  number  of  shares  of  Common  Stock   owned beneficially by each of them
as of June 30, 1995 and  the  number of shares which may be offered pursuant to
this Prospectus.  This information  is  based upon information provided by  the
Selling Stockholders.  The Selling Stockholders may offer  all,  some  or none
of their Common Stock.

                                        Number      Shares
                Shares Beneficially     of Shares   Beneficially Owned
                Owned Prior to Offering(1)          being   After Offering(1)(3)
Name            Number    Percent(2)    Offered     Number  Percent (2)

James  W.  Knutti (4)     22,667        *           22,667  0    *

Henry  V.  Allen (5)      15,111        *           15,111  0    *

Rohm  U.S.A. Inc.(6)      5,556         *           5,556   0    *


*    Less than one percent.

(1)  Unless  otherwise indicated below, the persons named in  the table have
sole voting and investment power with respect  to all  shares beneficially owned
by them, subject to community property laws where applicable.

(2)  Applicable  percentage of ownership is  based  on  9,605,106 shares of
Common Stock outstanding on June 30, 1995.

(3)  Assumes the sale of all shares offered hereby.

(4)  Dr.  Knutti  is  a  director, President and Chief  Executive Officer of
SMI.

(5)  Dr.  Allen  is  Vice  President of SMI and  was  formerly  a director of
SMI.

(6)  The  President and Chairman of the Board of Rohm U.S.A. Inc. was  formerly
the  Chairman of the  Board  of  Exar.   Rohm Corporation, a wholly-owned
subsidiary of Rohm U.S.A.  Inc., provides manufacturing and foundry services for
Exar.  Until March  31,  1995, Exar provided certain MIS  and  accounting
services for Rohm Corporation and until March 31, 1994, Exar provided  certain
security, legal and environmental services for Rohm Corporation.
 
                             PLAN OF DISTRIBUTION

The   shares  of  Common  Stock  offered  by  the  Selling Stockholders may be
sold from time to time to purchasers directly by  any  of the Selling
Stockholders acting as principal for  its own  account in one or more
transactions at a fixed price,  which may  be  changed, or at varying prices
determined at the time  of sale  or at negotiated prices.  Alternatively, any of
the Selling Stockholders may from time to time offer the Common Stock through
underwriters,  dealers or agents who may receive compensation  in the  form  of
underwriting discounts, commissions or concessions from the Selling Stockholders
and/or the purchasers of shares for whom  they  may  act as agent.  Sales may be
made on  the  Nasdaq National Market or in private transactions.  In addition to
sales of  Common Stock pursuant to the Registration Statement of  which this
Prospectus is a part, the Selling Stockholders may sell such Common  Stock in
compliance with Rule 144 promulgated  under  the Act.

The Selling Stockholders and any agents, broker-dealers  or underwriters that
participate in the distribution of  the  Common Stock offered hereby may be
deemed to be underwriters within  the meaning of the Act, and any discounts,
commissions or concessions received by them and any profit on the resale of the
Common Stock purchased  by  them might be deemed to be underwriting  discounts
and commissions under the Act.

In  order  to  comply with the securities laws  of  certain states,  if
applicable, the Common Stock may  be  sold  in  such jurisdictions  only
through registered or  licensed  brokers  or dealers.  In addition, in certain
states the Common Stock may not be sold unless it has been registered or
qualified for sale or an exemption  from  registration  or qualification
requirements  is available and is complied with.

Pursuant  to  the Plan of Reorganization, the  Company  has agreed  to register
the Selling Stockholders' Common Stock  under applicable  Federal  and  state
securities  laws  under  certain circumstances  and  at  certain  times.   The
Company  will  pay substantially  all of the expenses incident to the  offering
and sale  of  the Common Stock to the public, other than commissions,
concessions  and  discounts of underwriters, dealers  or  agents. Such  expenses
(excluding such commissions  and  discounts)  are estimated to be $15,000.  The
above-referenced agreement provides for  cross-indemnification of the Selling
Stockholders  and  the Company  to  the  extent permitted by law,  for  losses,
claims, damages,   liabilities  and  expenses  arising,   under   certain
circumstances, out of any registration of the Common Stock.

                                 LEGAL MATTERS

The  validity  of the issuance of the Common Stock  offered hereby  will  be
passed upon for the Company by  Cooley  Godward Castro Huddleson & Tatum, Palo
Alto, California.

                                    EXPERTS

The  financial statements and schedules of Exar Corporation as  of  March 31,
1995 and 1994 and for each of the years in  the three-year period ended March
31, 1995 have been incorporated  by reference  herein and in the registration
statement  in  reliance upon  the  report of KPMG Peat Marwick LLP, Independent
Certified Public  Accountants, incorporated by reference herein,  and  upon the
authority of said firm as experts in accounting and auditing.

No  dealer, salesman or other person has been authorized to give any
information or to make any representations other than those contained  in this
Prospectus and, if given or made, such  other information  and  representations
must not  be  relied  upon  as having been authorized by the Company.  This
Prospectus does not constitute  an offer or solicitation by anyone in any  state
in which  such offer or solicitation is not authorized, or in which the person
making such offer or solicitation is not qualified to do  so,  or  to any person
to whom it is unlawful to  make  such offer  or solicitation.  The delivery of
this Prospectus at  any time does not imply that the information herein is
correct as of any time subsequent to the date hereof.

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution

The following table sets forth all expenses, other than the underwriting
discounts and commissions, payable by the Registrant in connection with the sale
of the Common Stock being registered. All  the  amounts shown are estimates
except for the registration fee.

Registration fee                                $   500
Printing and engraving expenses                   2,000
Legal fees and expenses                           8,000
Accounting Fees and Expenses                      2,500
Nasdaq fee                                        2,000
  Total                                       $  15,000


Item 15.  Indemnification of Officers and Directors.

The  Registrant's Certificate of Incorporation  and  Bylaws include provisions
to (i) eliminate the personal liability of its directors for monetary damages
resulting from breaches  of  their fiduciary  duty to the extent permitted by
Section  102(b)(7)  of the  General Corporation Law of Delaware (the "Delaware
Law") and (ii)  require  the  Registrant  to indemnify  its  directors  and
officers  to the fullest extent permitted by Section 145  of  the Delaware Law,
including circumstances in which indemnification is otherwise discretionary.
Pursuant to Section 145 of the Delaware Law,  a  corporation  generally has the
power  to  indemnify  its present  and  former  directors, officers, employees
and  agents against expenses incurred by them in connection with any suit  to
which  they are, or are threatened to be made, a party by  reason of  their
serving in such positions so long as they acted in good faith  and in a manner
they reasonably believed to be in, or  not opposed  to,  the  best  interests of
a  corporation,  and,  with respect  to any criminal action, they had no
reasonable cause  to believe their conduct was unlawful.  The Registrant
believes that these  provisions  are necessary to attract and retain  qualified
persons  as  directors  and officers.  These  provisions  do  not eliminate
liability for breach of the director's duty of  loyalty to  the Registrant or
its stockholders, for acts or omissions not in  good  faith  or involving
intentional misconduct  or  knowing violations  of law, for any transaction from
which  the  director derived  an  improper  personal benefit or  for  any
willful  or negligent payment of any unlawful dividend or any unlawful  stock
purchase agreement or redemption.

The  Registrant  has  entered  into  agreements  with  its directors  and
executive officers that require the Registrant  to indemnify  such  persons
against  expenses,  judgments,   fines, settlements  and  other amounts actually
and reasonably  incurred (including  expenses of a derivative action) in
connection  with any  proceeding, whether actual or threatened, to which any
such person may be made a party by reason of the fact that such person is  or
was a director or officer of the Registrant or any of  its listed  enterprises,
subject to certain limitations set forth  in such  agreements.  The
indemnification agreements also set  forth certain  procedures that will apply
in the event of a  claim  for indemnification thereunder.
The  Registrant has purchased an insurance policy  covering the  officers  and
directors of the Registrant  with  respect  to certain   liabilities  arising
under  the  Securities   Act   or otherwise.

Item 16.  Exhibits

     (a)  Exhibits.

     Exhibit

     Number              Description of Document

     2.1                 Agreement and Plan of Reorganization dated June 8,
                         1995  among  Exar Corporation, Silicon Microstructures,
                         Inc.,  Rohm Corporation and James W. Knutti,  Henry  V.
                         Allen and Rohm U.S.A. Inc.
     5.1                 Opinion of Cooley Godward Castro Huddleson & Tatum.
     23.1                Consent  of  KPMG  Peat  Marwick  LLP.
                         Reference is made to page II-6.
     23.2                Consent   of  Cooley  Godward   Castro
                         Huddleson  &  Tatum.  Reference  is  made  to
                         Exhibit 5.1.
     24.1                Power of Attorney.  Reference is made to
                         page II-4.



Item 17.       Undertakings.

The undersigned registrant hereby undertakes:

 (1)  To file, during any period in which offers or sales are being  made,  a
post-effective amendment  to  this  registration statement to include any
material information with respect to the plan of distribution not previously
disclosed in the registration statement  or  any  material change to such
information  in  the registration statement;

(2)   That,  for the purpose of determining  any  liability under  the
Securities  Act, each post-effective  amendment  that contains  a  form  of
prospectus shall be deemed  to  be  a  new registration   statement  relating
to  the  securities   offered therein,  and the offering of such securities at
that time  shall be deemed to be the initial bona fide offering thereof; and

(3)   To  remove  from registration by  means  of  a  post- effective amendment
any of the securities being registered  which remain unsold at the termination
of the offering.

The  undersigned  registrant hereby  undertakes  that,  for purposes of
determining any liability under the Securities Act of 1933,  each filing of the
registrant's annual report pursuant  to Section  13(a) or 15(d) of the
Securities Exchange  Act  of  1934 that  is  incorporated by reference in the
registration statement shall  be  deemed to be a new registration statement
relating  to the   securities  offered  therein,  and  the  offering  of  such
securities  at that time shall be deemed to be the  initial  bona fide offering
thereof.

Insofar as indemnification for liabilities arising under the Securities  Act
may  be  permitted to  directors,  officers  and controlling  persons  of  the
registrant pursuant  to  provisions described  in  Item  15, or otherwise, the
registrant  has  been advised  that  in  the  opinion of the  Securities  and
Exchange Commission  such  indemnification is  against  public  policy  as
expressed in the Securities Act and is, therefore, unenforceable. In  the  event
that  a  claim for indemnification  against  such liabilities (other than the
payment by the registrant of expenses incurred or paid by a director, officer or
controlling person  of the  registrant in the successful defense of any action,
suit  or proceeding)  is asserted by such director, officer or controlling
person  in  connection with the securities being registered,  the registrant
will, unless in the opinion of its counsel the  matter has  been settled by
controlling precedent, submit to a court  of appropriate  jurisdiction the
question whether  such  indemnifica tion  by  it  is  against  public  policy
as  expressed  in  the Securities Act and will be governed by the final
adjudication  of such issue.

The  undersigned  Registrant hereby  undertakes  that,  for purposes  of
determining any liability under the Securities  Act, each filing of the
Registrant's annual report pursuant to Section 13(a)   or  Section  15(d)  of
the  Exchange  Act  (and,   where applicable,  each  filing of an employee
benefit  plan's  annual report  pursuant to Section 15(d) of the Exchange  Act)
that  is incorporated by reference in the Registration Statement shall  be
deemed  to  be  a  new  registration statement  relating  to  the securities
offered therein, and the offering of such  securities at that time shall be
deemed to be the initial bona fide offering thereof.

The undersigned Registrant hereby undertakes to deliver  or cause to be
delivered with the Prospectus, to each person to whom the  Prospectus  is sent
or given, the latest  annual  report  to security  holders  that  is
incorporated  by  reference  in  the Prospectus and furnished pursuant to and
meeting the requirements of  Rule  14a-3 or Rule 14c-3 under the Exchange Act;
and,  where interim financial information required to be presented by Article 3
or  Regulation  S-X are not set forth in  the  Prospectus,  to deliver,  or
cause to be delivered to each person  to  whom  the Prospectus is sent or given,
the latest quarterly report that  is specifically  incorporated  by reference
in  the  Prospectus  to provide such interim financial information.

The undersigned Registrant hereby undertakes that:

(1)   For purposes of determining any liability  under the  Securities  Act, the
information omitted from  the  form  of prospectus  filed  as  part  of this
Registration  Statement  in reliance  upon  Rule 430A and contained in a form
of  prospectus filed  by  the registrant pursuant to Rule 424(b)(1)  or  (4)  or
497(h)  under the Securities Act shall be deemed to  be  part  of this
Registration  Statement as of  the  time  it  was  declared effective.

(2)  For the purpose of determining any liability under the Securities Act, each
post-effective amendment that contains a form  of  prospectus  shall be deemed
to be  a  new  registration statement  relating to the securities offered
therein,  and  the offering  of such securities at that time shall be deemed  to
be the initial bona fide offering thereof.

                                   SIGNATURES


Pursuant to the requirements of the Securities Act of 1933, as amended,  the
Registrant has duly caused  this  Registration statement  to  be  signed  on
its  behalf  by  the  undersigned, thereunto duly authorized, in the City of
Santa Clara, County  of Santa Clara, State of California, on July 31, 1995.
                                                                  

                                EXAR CORPORATION



     By:       /S/ RONALD W. GUIRE
               Ronald W. Guire
               Senior  Vice  President,  Chief
               Financial Officer
               and Secretary


                               POWER OF ATTORNEY

KNOW  ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints George D.  Wells and  Ronald W. Guire and each or
any one of them, as his true and lawful   attorney-in-fact  and  agents   with
full   power   of substitution and resubstitution, for him and in his  name,
place and  stead,  in  any  and all capacities, to  sign  any  and  all
amendments   (including  post-effective   amendments)   to   this Registration
Statement, and to file the same, with all  exhibits thereto,  and other
documents in connection therewith,  with  the Securities and Exchange
Commission, granting unto said attorneys- in-fact and agents, and each of them,
full power and authority to do  and  perform  each  and  every act and  thing
requisite  and necessary  to  be done in connection therewith, as fully  to  all
intents  and  purposes as he might or could do in person,  hereby ratifying  and
confirming  all that said  attorneys-in-fact  and agents,  or  any  of  them,
or  their  or  his  substitutes   or substitute, may lawfully do or cause to be
done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as  amended, this
Registration Statement has been signed below by the  following  persons  in  the
capacities  and  on  the  dates indicated.


Signature                  Title                         Date



/S/ GEORGE D. WELLS        President, Chief              July 31, 1995
George D. Wells            Executive Officer
                           and Director
                           (Principal Executive
                           Officer)


/S/ RONALD W. GUIRE        Senior Vice                   July   31, 1995
Ronald W. Guire            President, Cheif Financial
                           Officer
                           Secretary and Director
                           (Principal Financial and
                           Accounting Officer)


/S/ RAIMON L. CONLISK      Chairman of the               July   31, 1995
Raimon L. Conlisk          Board and Director


/S/ JAMES E. DYKES         Director                      July   31, 1995
James E. Dykes


/S/ GEORGE E. GREGA        Director                       July  31, 1995
George E. Grega

                       CONSENT OF INDEPENDENT ACCOUNTANTS

As independent public accountants, we hereby consent to the use  of  our reports
incorporated herein by reference and to  the reference  to  our  firm  under
the  heading  "Experts"  in  the prospectus.


KPMG PEAT MARWICK LLP


Palo Alto, California
July 31, 1995

                               INDEX TO EXHIBITS
                                                         
     Exhibit                                             
     Number            Description of Document           


     2.1               Agreement and Plan of Reorganization dated
                       June 8, 1995 among Exar  Corporation,
                       Silicon Microstructures, Inc., Rohm Corporation
                       and  James  W.  Knutti, Henry V. Allen  and  Rohm
                       U.S.A. Inc

     5.1               Opinion of Cooley Godward Castro Huddleson & Tatum.

     23.1              Consent of KPMG Peat Marwick LLP.  Reference is made
                       to page II-6

     23.2              Consent  of  Cooley Godward  Castro  Huddleson  &
                       Tatum.  Reference is made to Exhibit 5.1.
  
     24.1              Power of Attorney.  Reference is made to page II-4



                                  EXHIBIT 2.1

                      AGREEMENT AND PLAN OF REORGANIZATION


                                     among:


                               EXAR CORPORATION,
                            a Delaware corporation;


                         SILICON MICROSTRUCTURES, INC.,
                           a California corporation;


                               ROHM CORPORATION,
                           a California corporation;


                                      and


              JAMES W. KNUTTI, HENRY V. ALLEN AND ROHM U.S.A. INC.



                            Dated as of June 8, 1995



TABLE OF CONTENTS                                    Page
Page

SECTION 1.SALE AND PURCHASE OF SHARES; RELATED
          TRANSACTIONS                                 1
          1.1  Sale and Purchase of Shares.            1
          1.2  Purchase Price.                         2
          1.3  Closing.                                2
          1.4  Tax Treatment.                          2
          1.5  Agreements with Selling Shareholders    3

SECTION 2.REPRESENTATIONS AND WARRANTIES OF
          THE FOUNDERS                                 3
          2.1  Subsidiaries.                           3
          2.2  Corporate Existence.                    3
          2.3  Capitalization.                         4
          2.4  Financial Statements of SMI.            4
          2.5  Changes.                                4
          2.6  No Undisclosed Liabilities.             4
          2.7  Taxes.                                  4
          2.8  Real Property.                          5
          2.9  Tangible Personal Property.             5
          2.10  Intellectual Property.                 5
          2.11  Compliance with Laws.                  6
          2.12  Contracts.                             6
          2.13  Employees, Salaries and Fringe
                Benefits.                              6
          2.14  Insurance.                             7
          2.15  Receivables.                           7
          2.16  Inventory.                             7
          2.17  Sale of Products; Performance of
                Services.                              8
          2.18  Litigation.                            8
          2.19  Non-Contravention.                     8
          2.20  Corporate Authority; Authorization.    8
          2.21  Governmental Approvals.                8
          2.22  Brokers.                               9
          2.23  Full Disclosure.                       9
          2.24  Title To Shares.                       9
          2.25  No Claim Against SMI.                  9
          2.26  Investment Representations.            9

SECTION 3.REPRESENTATIONS AND WARRANTIES OF EXAR       10
          3.1  Acquisition of Shares.                  10
          3.2  Due Organization                        10
          3.3  Corporate Authority; Authorization.     11
          3.4  Governmental Approvals; No Conflicts.   11
          3.5  Changes.                                11
          3.6  SEC Filings; Financial Statements.      11
          3.7  Offering Valid                          12
          3.8  Disclosure.                             12
          3.9  Finders.                                12

SECTION 4.PRE-CLOSING COVENANTS OF SMI AND THE SELLING
          SHAREHOLDERS                                 12
          4.1  Access and Investigation.               12
          4.2  Operation of Business.                  12
          4.3  Filings and Consents.                   15
          4.4  Notification; Updates to Disclosure
               Schedule.                               15
          4.5  Best Efforts.                           16

SECTION 5.COVENANTS OF EXAR                            16
          5.1  Negative Covenants                      16
          5.2  Affirmative Covenants                   16
          5.3  Post-Closing Covenants.                 17
SECTION 6.CONDITIONS PRECEDENT TO OBLIGATIONS OF EXAR  17
          6.1  Due Diligence                           17
          6.2  Compliance with Covenants and
          Conditions; Representations and
          Warranties Correct                           17
          6.3  No Material Adverse Effect              17
          6.4  Officer's Certificate                   17
          6.5  Consents of Others                      17
          6.6  Continuity of Interest Certificates     18
          6.7  Legal Opinion                           18
          6.8  Employment Agreements.                  18
          6.9  Resignations                            18
          6.10  Securities Law Compliance              18
          6.11  Absence of Restraint                   18
          6.12  No Proceedings                         18
          6.13  Required Approvals                     18
          6.14  Legal Requirements                     18
          6.15  FIRPTA                                 19

SECTION 7.CONDITIONS PRECEDENT TO OBLIGATIONS
          OF THE SELLING SHAREHOLDERS                  19
          7.1  Compliance with Covenants and
               Conditions; Representations and
               Warranties Correct                      19
          7.2  Officers' Certificate                   19
          7.3  Absence of Restraint                    19
          7.4  No Material Adverse Effect              19
          7.5  Securities Law Compliance               19
          7.6  No Proceedings                          19
          7.7  Required Approvals                      19
          7.8  Legal Requirements                      19

Section 8.INDEMNITY BY FOUNDERS                        20
          8.1  Indemnity                               20
          8.2  Satisfaction of Indemnification         20
          8.3  Third-Party Claims.                     21
          8.4  Fraud                                   21
          8.5  Survival of Representations
               and Warranties                          21

SECTION 9.EARN-OUT PAYMENTS FOR FOUNDERS               21
          9.1  Calculation of Earn-Out Payments        21
          9.2  Distributions of Earn-Out Payments.     23
          9.3  Post-Closing Covenants of Exar.         23

Section 10.REGISTRATION RIGHTS.                        24
          10.1  Registration Rights.                   24
          10.2  Piggyback Registration.                26
          10.3  Indemnification.                       27
          10.4  Current Public Information.            28
          10.5  Termination of Registration Rights.    28
          10.6  Transferability of Registration
                 Rights.                               28

SECTION 11.TERMINATION OF AGREEMENT                    28
          11.1  Termination                            28
          11.2  Effect of Termination                  29
          11.3  Fees and Expenses                      29
          11.4  Extension of Time; Waivers             29

SECTION 12.MISCELLANEOUS                               30
          12.1  Amendment                              30
          12.2  Entire Agreement; Counterparts;
                Applicable Law                         30
          12.3  Attorneys' Fees                        30
          12.4  Assignability                          30
          12.5  Notices                                30
          12.6  Severability                           31
          12.7  Shareholder Consent.                   32
          12.8  Waiver of Right of First Refusal       32
          12.9  Waiver of Liquidation Rights           32
          12.10  Titles                                32
          12.11  Cooperation                           32
          12.12  Third Party Beneficiary Rights        32
          12.13  Publicity                             32

EXHIBITS

Exhibit A:     Certain Definitions



THIS AGREEMENT AND PLAN OF REORGANIZATION is entered into as of June 8, 1995, by
and among EXAR CORPORATION, a Delaware corporation ("Exar"), SILICON
MICROSTRUCTURES, INC., a California corporation ("SMI"), ROHM CORPORATION, a
California Corporation (as to Section 1.5 only) and the following parties; JAMES
W. KNUTTI, HENRY V. ALLEN (collectively, the "Founders") AND ROHM U.S.A. INC., a
Delaware corporation ("Rohm") (the "Agreement").  James W. Knutti, Henry V.
Allen and Rohm are referred to herein collectively as the "Selling
Shareholders."  Exar, SMI, Rohm, James Knutti and Henry Allen are referred to
herein collectively as the "parties".  Certain capitalized terms used in this
Agreement are defined on Exhibit A.


RECITALS

     A.   WHEREAS, the Selling Shareholders own 1,000,000 shares of the Common
Stock of SMI and 40,909 shares of Series A Preferred Stock of SMI (collectively,
the "Shares"), which constitute 87.4% of the outstanding capital stock of SMI;

     B.   WHEREAS, Exar desires to purchase, and the Selling Shareholders desire
to sell, the Shares on the terms set forth in this Agreement; and

     C.   WHEREAS, Exar has agreed to loan SMI up to $500,000 for working
capital, of which $50,000 shall be advanced before the closing of the stock
purchase contemplated hereby; and

     D.   WHEREAS, upon completion of the sale Exar shall hold 100% of the
outstanding capital stock of SMI.
AGREEMENT

          Therefore, Exar, SMI and the Selling Shareholders, intending to be
legally bound, agree as follows:

SECTION 1 SALE AND PURCHASE OF SHARES; RELATED TRANSACTIONS

     1.1  Sale and Purchase of Shares.  At the Closing, the Selling Shareholders
shall sell, assign, transfer and deliver the Shares to Exar, and Exar shall
purchase the Shares from the Selling Shareholders, on the terms and subject to
the conditions set forth in this Agreement (the "Transaction").

     1.2  Purchase Price.

          (a)  The aggregate purchase price payable by Exar for the Shares (the
"Purchase Price") shall be $1,170,018, plus the contingent earn-out payments
based on the future performance of SMI as further set forth in Section 9.  The
Purchase Price shall be paid by Exar to the Selling Shareholders as set forth in
Sections 1.2(b) and 1.2(c).

          (b)  At the Closing, the Selling Shareholders shall receive (i) for
each share of SMI Common Stock outstanding, a number of shares of Exar Common
Stock equal to $1.02 divided by the Fair Market Value per share of Exar Common
Stock, and (ii) for each share of SMI Series A Preferred Stock, a number of
shares of Exar Common Stock equal to $3.6667 divided by the Fair Market Value
per share of Exar Common Stock.  For these purposes, the "Fair Market Value per
share of Exar Common Stock" shall be the average of the closing bid and asked
price per share of Exar Common Stock on the last trading day prior to the date
of the Closing.

          (c)  The Founders shall also have the right to receive earn-out
payments based on the future performance of SMI as further set forth in Section
9.  The rights of the Founders to participate in distributions of earn-out
payments shall not be transferable, except by will or descent.

     1.3  Closing.

          (a)  The closing of the sale of the Shares to Exar (the "Closing")
shall take place at the offices of Cooley Godward Castro Huddleson & Tatum, Palo
Alto, California at 4:00 p.m. (California time) on June 12, 1995, or at such
other time and place as the parties may mutually agree.

          (b)  At the Closing or within three business days thereafter:

               (i)  the Selling Shareholders shall deliver to Exar the stock
certificates representing the Shares, duly endorsed (or accompanied by duly
executed stock powers), and Exar shall deliver stock certificates for the Exar
Common Stock representing the portion of the Purchase Price set forth in Section
1.2(b);

               (ii) Exar shall deliver to SMI $500,000 in the form of a loan for
working capital less the $50,000 which will have been previously provided to
SMI; and

               (iii)     Exar, SMI and the Selling Shareholders shall provide
such other agreements as are required in this Agreement.

     1.4  Tax Treatment.

     The Transaction is intended to qualify as a tax-free reorganization within
the meaning of the provisions of Section 368 of the Code and to be accounted for
as a purchase.

     1.5  Agreements with Selling Shareholders.

          (a)  Effective as of the Closing or within three business days
thereafter, Exar shall cause SMI to do the following:

               (i)  Pay amounts owed by SMI to Rohm Corporation for delinquent
lease payments on its equipment (which amount, as of June 12, 1995, is an
aggregate of $77,214.75) plus property tax of $1,065.25;

               (ii) Purchase the equipment listed on Exhibit B attached hereto
currently being leased by SMI from Rohm Corporation under the Equipment Lease
Agreement dated February 8, 1993 (the "Lease Agreement"), for an aggregate
purchase price of $304,520.50 plus sales tax, pursuant to a Bill of Sale in the
form attached hereto as Exhibit C.  Effective with such purchase, the Lease
Agreement including Sections 18 and 19 shall terminate and be of no further
force or effect.

          (b)  Effective as of the Closing, the Series A Preferred Stock
Investors' Rights Agreement by and among SMI, Exar and Rohm dated as of February
8, 1993, is hereby terminated and shall have no further force or effect.

          (c)  Effective as of the Closing, the First Refusal and Co-Sale
Agreements between Henry V. Allen and James W. Knutti, respectively, SMI, Exar
and Rohm dated February 8, 1993, are hereby terminated and shall have no further
force or effect.

          (d)  Exar and Rohm hereby confirm that the Supplemental Agreement
between Exar and Rohm Corporation dated as of March 31, 1994 shall survive the
transactions described in this Agreement, shall continue to be in full force and
effect and that SMI, as an Exar subsidiary, shall have the benefit of such
agreement.  Exar and Rohm hereby confirm their supply obligations thereunder.

SECTION 2.     REPRESENTATIONS AND WARRANTIES OF THE FOUNDERS

     The Founders represent and warrant to Exar that, except as disclosed or
otherwise referred to in the SMI Disclosure Schedule attached hereto as Exhibit
D (the "Disclosure Schedule"), the statements made in Sections 2.1 through 2.23
are true and correct.  In addition, each of the Selling Shareholders make the
representations and warranties set forth in Sections 2.24, 2.25 and 2.26 only on
behalf of himself or itself, and not on behalf of the other Selling
Shareholders.

     2.1  Subsidiaries.  SMI has no subsidiaries.

     2.2  Corporate Existence.  SMI is a corporation duly incorporated, validly
existing and in good standing under the laws of the State of California.  SMI
has all necessary corporate power to enter into and perform its obligations
under this Agreement.  SMI has all necessary corporate power to carry on its
business substantially as it is being conducted as of the date of this
Agreement, and is duly qualified to conduct business as a foreign corporation
and in good standing in the jurisdictions required by the nature of its business
and where the failure to qualify would have a material adverse effect.

     2.3  Capitalization.  The authorized capital stock of SMI consists of
2,250,000 shares of which: (a) 2,000,000 shares are Common Stock, of which
1,000,000 shares are outstanding as of the date of this Agreement; and (b)
250,000 shares Preferred Stock of which 238,609 are designated Series A
Preferred Stock, of which 190,909 shares are outstanding as of the date of this
Agreement.  All of the outstanding shares of the capital stock of SMI have been
validly issued and are fully paid and nonassessable.  Except as set forth in the
Disclosure Schedule there are no options or rights to acquire capital stock of
SMI outstanding as of the date of this Agreement nor any securities or
obligations convertible into or exchangeable for capital stock of SMI
outstanding as of the date of this Agreement.

     2.4  Financial Statements of SMI.  SMI has delivered to Exar copies of
unaudited financial statements for the last three fiscal years and unaudited
interim financial statements as of March 31, 1995.  The unaudited financial
statements present fairly, in all material respects, the financial position of
SMI as of the dates thereof and the results of operations of SMI for the fiscal
years covered thereby and have been prepared in accordance with the books and
records of SMI.  Except to the extent that normal year-end audit adjustments
would need to be made and footnotes would need to be included, the interim
financial statements present fairly, in all material respects, the financial
position of SMI as of March 31, 1995 and the results of operations of SMI for
the period then ended and have been prepared in accordance with the books and
records of SMI.

     2.5  Changes.  Between March 31, 1995 and the date of this Agreement: (i)
there has not been any adverse change in the financial condition or results of
operations of SMI, other than changes which have not had a material adverse
effect on the business or operations of SMI taken as a whole and changes
relating to general economic conditions or conditions generally affecting the
industry in which SMI operates; (ii) no dividend or other distribution in
respect of the shares of the capital stock of SMI has been declared, paid or
made; (iii) SMI has not increased the compensation of, or paid any bonus to, any
employee of SMI, except in connection with annual performance reviews of non-
officer employees; (iv) SMI has not conducted its business in a manner that
departs materially from the manner in which such business was being conducted
prior to March 31, 1995; and (v) SMI has not entered into any material
transaction, other than transactions contemplated by this Agreement or by any of
the contracts or other documents referred to in the Disclosure Schedule.

     2.6  No Undisclosed Liabilities.  As of the date of this Agreement, SMI
does not have any liabilities of the type required to be shown in the
"Liabilities" column of a balance sheet prepared in accordance with generally
accepted accounting principles, other than:  (i) liabilities which are reflected
or reserved against in the financial statements; (ii) liabilities incurred in
connection with the transactions contemplated by this Agreement; and (iii)
liabilities which are not material from the standpoint of the business or
operations of SMI taken as a whole.

     2.7  Taxes.  SMI has filed, within the time and in the manner required by
law, all Tax returns required to be filed by it and has paid all Taxes shown as
due and payable on such returns.  SMI has established on its books reserves that
are adequate for the payment of all Taxes not yet due and payable.  SMI has not
consented to any waiver or extension of any statute of limitations relating to
the assessment or collection of any Tax.  The federal income tax returns of SMI
have not been audited by the Internal Revenue Service for any periods.

     2.8  Real Property.  SMI does not own any real property or any interest in
real property, except for the leaseholds created under the real property leases
identified in the Disclosure Schedule.

     2.9  Tangible Personal Property.  The books and records of SMI contain
accurate descriptions of all tangible personal property leased or owned thereby.
All of the tangible personal property used by SMI in its business is owned free
and clear of any liens or encumbrances, except for the leased equipment
identified in the Disclosure Schedule.

     2.10 Intellectual Property.

          (a)  The Disclosure Schedule lists all domestic and foreign patents
and patent applications owned by or licensed to SMI as of the date of this
Agreement ("SMI Patents"), and identifies all material license agreements that
are in effect as of the date of this Agreement and that relate to SMI Patents,
other than any license agreement contained in packaging delivered to an end user
customer or implied by the sale of a product.

          (b)  To the best of the Founders' knowledge, SMI has the right to use
all copyrights and copyright registrations owned by or licensed to SMI as of the
date of this Agreement ("SMI Copyrights").  The Disclosure Schedule lists all
registered SMI Copyrights and identifies all material license agreements that
are in effect as of the date of this Agreement and that relate to SMI
Copyrights, other than any license agreement contained in packaging delivered to
an end user customer or implied by the sale of a product.

          (c)  The Disclosure Schedule lists all domestic and foreign registered
trademarks and trademark applications owned by or licensed to SMI as of the date
of this Agreement ("SMI Trademarks"), and identifies all material license
agreements that are in effect as of the date of this Agreement and that relate
to SMI Trademarks, other than any license agreement contained in packaging
delivered to an end user customer or implied by the sale of a product.

          (d)  SMI may own or have in its possession certain technical
information and know-how that constitute trade secrets under applicable law
("SMI Trade Secrets").  SMI has taken reasonable precautions to maintain SMI
Trade Secrets in confidence and to prevent their disclosure to unauthorized
persons.

          (e)  All SMI Patents, registered SMI Copyrights and SMI Trademarks
owned by SMI are owned free of any liens or encumbrances, and no licenses
thereunder have been granted to any person except as identified in the
Disclosure Schedule.

          (f)  To the best of the Founders' knowledge, there is no existing
infringement by SMI upon the patents, trademarks, copyrights, trade secrets or
other similar intellectual property rights of others, and no such infringement
would result from products currently under development by SMI, except for any
infringement that does not or would not subject SMI to a loss which is material
from the standpoint of the business or operations of SMI taken as a whole.
During the three years preceding the date of this Agreement, SMI has not been a
defendant or plaintiff in any legal proceeding relating to its business which
has not been finally terminated prior to the date hereof and which involves a
claim of infringement of any patents, copyrights, trademarks, trade secrets or
other similar intellectual property rights of others, except for such
infringements that do not subject SMI to a loss which is material from the
standpoint of the business or operations of SMI taken as a whole.  To the best
of the Founders' knowledge, except for infringements that do not subject SMI to
a loss which is material from the standpoint of the business or operations of
SMI taken as a whole, there are no continuing infringements by any Person of any
SMI Patent, SMI Copyright, SMI Trademark or SMI Trade Secret owned by SMI.  No
SMI Patent, SMI Copyright or SMI Trademark has been involved in any
interference, opposition or cancellation proceeding during the three years
preceding the date of this Agreement and SMI has not received any notice of
actual or alleged infringement of any third party intellectual property rights.

     2.11 Compliance with Laws.  SMI conducts its business in substantial
compliance with all applicable laws and governmental regulations.

     2.12 Contracts.  The Disclosure Schedule lists all material agreements to
which SMI is a party as of the date of this Agreement.  Copies of the contracts
set forth in Section 2.12 of the Disclosure Schedule have been made available to
Exar, and, to the best of the Founders' knowledge, none of the parties to any of
such contracts is in default thereunder, except where the default would not have
a material adverse effect on the business or operations of SMI taken as a whole.

     2.13 Employees, Salaries and Fringe Benefits.  The Disclosure Schedule sets
forth the name, position and annual salary of each person who is employed by SMI
as of the date of this Agreement and whose annual salary exceeds $50,000 as of
the date of this Agreement.  Except as set forth on the Disclosure Schedule, the
Company has no employment agreement providing for employee remuneration or
benefits which is not terminable at will by the Company.  The Disclosure
Schedule provides a brief description of all material fringe benefits made
available to the employees of SMI as of the date of this Agreement.

          (a)  The SMI Disclosure Schedule contains a true and complete list of
each material bonus, deferred compensation, incentive compensation, stock
purchase, stock option, severance or termination pay, hospitalization or other
medical, life or other insurance, supplemental unemployment benefits, profit-
sharing, pension, or retirement plan, program or agreement (collectively, the
"Plans"), sponsored, maintained or contributed to or required to be contributed
to by SMI for the benefit of any current employee of SMI ("Employee").

          (b)  SMI does not sponsor or maintain any employee pension benefit
plan (as such term is defined in Section 3(2) of ERISA).

          (c)  SMI has not engaged in a transaction in connection with which it
could become subject to a civil penalty assessed pursuant to Section 502(i) of
ERISA or a tax imposed by Section 4975 of the Code.

          (d)  SMI is not liable for any accumulated funding deficiencies  (as
defined in Section 302 of ERISA and Section 412 of the Code) with respect to any
Plan.

          (e)  To the actual knowledge of SMI, each Plan conforms in all
material respects with, and is administered in all material respects in
compliance with, all applicable requirements of ERISA and the Code.

     2.14 Insurance.  The Disclosure Schedule identifies all material insurance
policies held by SMI as of the date of this Agreement.

     2.15 Receivables.
          (a)  The SMI Disclosure Schedule provides an accurate and complete
breakdown and aging of all accounts receivable, notes receivable and other
receivables of SMI as of March 31, 1995.

          (b)  All existing accounts receivable of SMI (including those accounts
receivable reflected on the March 31, 1995 balance sheet that have not yet been
collected and those accounts receivable that have arisen since March 31, 1995 in
the ordinary course of business and have not yet been collected): (i) represent
valid obligations of customers of SMI arising from bona fide transactions
entered into in the ordinary course of business consistent with past practices;
and (ii) are current and, except as fully reserved in the Balance Sheet, SMI has
no reason to believe they will not be collected in full (without any
counterclaim or setoff) on or before September 30, 1995.

     2.16 Inventory.  The SMI Disclosure Schedule provides an accurate and
complete breakdown of all inventory (including raw materials, work in process
and finished goods) of SMI as of March 31, 1995.  All of SMI's existing
inventory (including all inventory that is reflected on the March 31, 1995
balance sheet and that has not been disposed of by SMI since March 31, 1995):
(a) is of such quality and quantity as to be usable and saleable by SMI in the
ordinary course of business consistent with past practices; (b) has been priced
at the lower of estimated cost or market value using the first-in, first-out
method; and (c) is free of any defect or deficiency.  The inventory levels
maintained by SMI:  (a) are not excessive in light of SMI's normal operating
requirements; and (b) are adequate for the conduct of SMI's operations in the
ordinary course of business consistent with past practices.

     2.17 Sale of Products; Performance of Services.

          (a)  To the best of the Founders' knowledge, each product that has
been sold by SMI to any person: (i) conformed and complied in all material
respects with the terms and requirements of any applicable warranty or other
Contract and with all applicable Legal Requirements; and (ii) was free of any
design defects, construction defects or other defects or deficiencies at the
time of sale.  To the best of the Founders' knowledge, all repair services and
other services that have been performed by SMI were performed properly and in
full conformity with the terms and requirements of all applicable warranties and
other Contracts and with all applicable Legal Requirements.

          (b)  SMI has no reason to believe that it will incur or otherwise
become subject to any Liability arising directly or indirectly from any product
manufactured or sold, or any repair services or other services performed by, SMI
on or at any time prior to the Closing.

     2.18 Litigation.  There is no legal proceeding pending against SMI before
any court, governmental body or arbitrator (or, to the best of the Founders'
knowledge being threatened against SMI).

     2.19 Non-Contravention.   Except for violations which would not subject SMI
to a penalty or loss that is material from the standpoint of the business or
operations of SMI taken as a whole, the execution, delivery and performance of
this Agreement by SMI: (i) will not result in a violation of the Articles of
Incorporation or Bylaws of SMI; (ii) will not result in a violation of any
agreement to which SMI is a party, assuming that the consents, waivers and
approvals identified in the Disclosure Schedule are obtained prior to the
Closing; and (iii) will not result in a violation of any law or governmental
regulation to which SMI is subject, assuming that any applicable federal and
state securities laws and regulations are complied with.

     2.20 Corporate Authority; Authorization.  SMI has full corporate power and
authority to execute, deliver and perform this Agreement.  The execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby have been duly and validly authorized by the Boards of Directors of SMI
and no other corporate proceedings on the part of SMI are necessary for SMI to
authorize this Agreement or to consummate the transactions contemplated hereby.
This Agreement has been duly executed and delivered by duly authorized officers
of SMI.  This Agreement constitutes a legal, valid and binding obligation of
SMI, enforceable against it in accordance with its terms (except as enforcement
thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or
other similar laws, both state and federal, affecting the enforcement of
creditors' rights or remedies in general from time to time in effect and the
exercise by courts of equity powers).

     2.21 Governmental Approvals. No authorization, consent or approval of, or
registration or filing with, any governmental authority is required to be
obtained or made on or before the Closing by SMI in connection with SMI's
execution and delivery of this Agreement or the consummation by SMI of the
transactions contemplated hereby, except for any authorizations, approvals or
filings required to be obtained or made under applicable federal and state
securities laws and regulations, and except where the failure to obtain or make
any such authorization, consent, approval, registration or filing would not
subject SMI to a penalty or loss that is material from the standpoint of the
business or operations of SMI taken as a whole.

     2.22 Brokers.  SMI has not agreed to pay any brokerage fees, finder's fees
or other similar fees or commissions with respect to the transactions
contemplated by this Agreement.

     2.23 Full Disclosure.  None of the representations and warranties made by
Founders, or made in any certificate or memorandum furnished or to be furnished
by them or by SMI, or on their behalf, contains or will contain any untrue
statements of a material fact or omit any material fact the omission of which
would be misleading.

     2.24 Title To Shares.  Each Selling Shareholder is the owner, beneficially
and of record, of all of the shares listed beside his or its name on the
Disclosure Schedule, free and clear of any liens, encumbrances, security
agreements, equities, options, claims, charges or restrictions, and effective
with the Closing, such Selling Shareholder's entire right, title and interest in
and to such shares shall have been conveyed to Exar.  Except for such shares,
Selling Shareholder has no interest in any equity security of SMI and is not the
beneficiary of any subscription, option, right, warrant, convertible security,
or other agreement or commitment obligating SMI to issue or to transfer from
treasury any additional shares of its capital stock.

     2.25 No Claim Against SMI.  Except as set forth on the Disclosure Schedule,
each Selling Shareholder has no contract, agreement or arrangement with SMI of
any kind that will survive the Closing, and no claim or right against SMI of any
nature whatsoever, absolute or contingent, except for (i) rights arising from
such Selling Shareholder's ownership of the shares being conveyed to Exar
pursuant to this Agreement, or (ii) in the case of the Founders, employment
compensation that is accrued and unpaid.

     2.26 Investment Representations.  Each of the Selling Shareholders (with
each Selling Shareholder providing an undertaking only as to himself or itself,
to the extent references are made to the actions of Selling Shareholders):

          (a)  represents and warrants that it is acquiring the shares of Exar
Common Stock solely for its account for investment and not with a view to or for
sale or distribution of said shares or any part thereof; and represents that the
entire legal and beneficial interests of the shares of Exar Common Stock the
selling Shareholder is acquiring is being acquired for, and will be held for,
its account only;

          (b)  understands that the shares Exar Common Stock have not been
registered under the Securities Act of 1933, as amended (the "Act"), on the
basis that no distribution or public offering of the shares is to be effected
realizes that the basis for the exemption may not be present if, notwithstanding
its representations, it has in mind merely acquiring the shares of Exar Common
Stock for a fixed or determinable period in the future, or for a market rise, or
for sale if the market does not rise.  Each Selling Shareholder has no such
intention;

          (c)  recognizes that the shares of Exar Common Stock being acquired by
it must be held indefinitely unless they are subsequently registered under the
Securities Act or an exemption from such registration is available and that,
except as provided in the Agreement, Exar has no obligation to register the
shares or to comply with any exemption from such registration;

          (d)  is aware that the shares of Exar Common Stock may not be sold
pursuant to Rule 144 adopted under the Securities Act unless certain conditions
are met and until the undersigned has held the shares for at least two years;

          (e)  further agrees not to make any disposition of all or any part of
the shares of Exar Common Stock being acquired in any event unless and until:

               (i)  Exar shall have received a letter secured by the undersigned
from the Securities and Exchange Commission stating that no action will be
recommended to the Commission with respect to the proposed disposition; or

               (ii) There is then in effect a registration statement under the
Securities Act covering such proposed disposition and such disposition is made
in accordance with said registration statement; or

               (iii)     (a)  The Selling Shareholder shall have notified Exar
of the proposed disposition and shall have furnished Exar with a detailed
statement of the circumstances surrounding the proposed disposition, (b) the
undersigned shall have furnished Exar with an opinion of counsel for the
undersigned to the effect that such disposition will not require registration of
such shares under the Securities Act, and (c) such opinion of counsel for the
undersigned shall have been concurred in by Exar's counsel and Exar shall have
advised the undersigned of such concurrence; and

          (f)  understands and agrees that all certificates evidencing the
shares to be issued to the undersigned may bear the following legends:

     "THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN  ACQUIRED FOR
INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933.
SUCH SHARES MAY NOT BE   SOLD OR TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION
                OR AN EXEMPTION THEREFROM UNDER SAID ACT."

SECTION 3.     REPRESENTATIONS AND WARRANTIES OF EXAR

     Exar represents and warrants to SMI and the Selling Shareholders as of the
date of this Agreement and as of the Closing as follows:

     3.1  Acquisition of Shares.  Exar is not acquiring the Shares with the
current intention of making a public distribution thereof.

     3.2  Due Organization.  Exar is a corporation duly organized, existing and
in good standing under the laws of the State of Delaware.  Exar has all
necessary power and authority under applicable corporate law and its
organizational documents to own or lease its properties and to carry on its
business as presently conducted.

     3.3  Corporate Authority; Authorization.  Exar has full corporate power and
authority to execute, deliver and perform this Agreement.  The execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby have been duly and validly authorized by the Boards of Directors of Exar
and no other corporate proceedings on the part of Exar are necessary for Exar to
authorize this Agreement or to consummate the transactions contemplated hereby.
This Agreement has been duly executed and delivered by duly authorized officers
of Exar.  This Agreement constitutes a legal, valid and binding obligation of
Exar, enforceable against it in accordance with its terms (except as enforcement
thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or
other similar laws, both state and federal, affecting the enforcement of
creditors' rights or remedies in general from time to time in effect and the
exercise by courts of equity powers).

     3.4  Governmental Approvals; No Conflicts.  Except as may be required by
the Securities Act of 1933 (the "Securities Act"), state securities laws, and
the Delaware General Corporation Law, there is no material Legal Requirement
that Exar make any filing with, or obtain any permit, authorization, consent or
approval of, any Governmental Authority as a condition to the lawful
consummation by Exar of the transactions contemplated by this Agreement.
Neither the execution and delivery of this Agreement by Exar nor the
consummation by Exar of the transactions contemplated by this Agreement will (i)
conflict with or result in any breach of any provision of the Certificate of
Incorporation or Bylaws of Exar, (ii) result in a violation of a material
agreement to which Exar is a party or (iii) violate any Legal Requirement,
order, writ, injunction, decree or arbitration award applicable to Exar or its
respective assets which violation could have a material adverse effect on Exar.

     3.5  Changes.  Between March 31, 1995 and the date of this Agreement: (i)
except with respect to the matters addressed in Exar's press release dated May
25, 1995 (regarding its hard disk drive products), there has not been any
adverse change in the financial condition or results of operations of Exar,
other than changes which have not had a material adverse effect on the business
or operations of Exar taken as a whole and changes relating to general economic
conditions or conditions generally affecting the industry in which Exar
operates; (ii) no dividend or other distribution in respect of the shares of the
capital stock of Exar has been declared, paid or made and (iii) Exar has not
conducted its business in a manner that departs materially from the manner in
which such business was being conducted prior to March 31, 1995.

     3.6  SEC Filings; Financial Statements.

          (a)  Exar has provided to SMI a complete and accurate copy of each
report, schedule, registration statement and definitive proxy statement filed by
Exar with the Securities and Exchange Act (the "SEC") on or after May 31, 1994
and prior to the date of this Agreement (the "Exar SEC Reports"), which are all
the forms, reports and documents required to be filed by Exar with the SEC since
May 31, 1994.  The Exar SEC Reports (i) complied with the requirements of the
Securities Act or the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), as the case may be, at the times they were filed (or if amended or
superseded by a filing prior to the date of this Agreement then or the date of
such filing), and (ii) did not at the time they were filed (or if amended or
superseded by a filing prior to the date of this Agreement then on the date of
such filing) contain any untrue statement of a material fact or omit to state a
material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they were made,
not misleading.

          (b)  Each of the sets of consolidated financial statements (including,
in each case, any notes thereto) contained in the Exar SEC Reports fairly
presents the consolidated financial position of Exar and its material
subsidiaries as at the respective dates thereof and the consolidated results of
their operations and cash flows for the periods indicated, except that the
unaudited interim financial statements were or are subject to normal and
recurring year-end adjustments which were not or are not expected to be material
in amount.

     3.7  Offering Valid.  The issuance of the shares of Exar Common Stock
pursuant to Section 1.2 hereof will be exempt from the registration requirements
of the Securities Act and will have been registered or qualified (or are exempt
from registration and qualification) under the registration, permit or
qualification requirements of all applicable state securities laws.

     3.8  Disclosure.

          (a)  The copies of all documents furnished by Exar pursuant to the
terms of this Agreement are complete and accurate.
          (b)  For purposes of this Agreement and the transactions contemplated
thereby, none of (i) the representations and warranties made by Exar in this
Agreement, (ii) the Exar Disclosure Schedule or, (iii) any statement by Exar or,
to the best of Exar's knowledge, any other person, contained in any document,
certificate or other writing furnished by Exar to SMI specifically identified as
supplemental disclosure in connection with this Agreement or the transactions
contemplated hereby contains or will contain any untrue statement of a material
fact or omits or will omit to state any material fact necessary to make the
statements made herein or therein, in light of the circumstances in which they
were made, not misleading.

     3.9  Finders.  Exar has not dealt with any person, firm, or corporation
who, as a result, is or may be entitled to a broker's commission, finder's fee,
investment banker's fee, or similar payment from Exar for arranging the
transactions contemplated hereby or introducing the parties to each other.

SECTION 4.     PRE-CLOSING COVENANTS OF SMI AND THE SELLING
               SHAREHOLDERS

     4.1  Access and Investigation.  SMI and each of the Selling Shareholders
shall ensure that, at all times during the Pre-Closing Period, SMI and its
Representatives will cooperate with Exar and its Representatives and prepare and
make available such documents and information relating to SMI and take such
other actions as Exar may request in good faith.

     42.  Operation of Business.  SMI and each of and the Selling Shareholders
(with each Selling Shareholder providing an undertaking only as to himself or
itself, to the extent references are made to the actions of Selling
Shareholders) shall ensure that, during the Pre-Closing Period without the prior
written consent of Exar:

          (a)  such Selling Shareholder does not directly or indirectly sell or
otherwise transfer, or offer, agree or commit (in writing or otherwise) to sell
or otherwise transfer, any of the Shares or any interest in or right relating to
any of the Shares;

          (b)  such Selling Shareholder does not permit, and does not offer,
agree or commit (in writing or otherwise) to permit, any of the Shares to become
subject, directly or indirectly, to any Encumbrance;

          (c)  SMI and the each of Selling Shareholders does not take or permit
any action which would prevent the Transaction from qualifying as a tax-free
reorganization under Section 368 of the Code, and Exar will use its best efforts
to prevent any of its officers or directors from taking or permitting any such
action.

          (d)  SMI conducts its operations exclusively in the Ordinary Course of
Business and in the same manner as such operations have been conducted prior to
the date of this Agreement;

          (e)  other than in the Ordinary Course of Business, SMI does not incur
any indebtedness for borrowed money or incur any contingent liability as a
guarantor or otherwise with respect to the obligations of any person or entity
except as contemplated in this Agreement;

          (f)  SMI uses its Best Efforts to preserve intact its current business
organization, keep available the services of its current officers and employees
and maintain its relations and good will with all suppliers, customers,
landlords, creditors, licensors, licensees, employees and other Persons having
business relationships with SMI;

          (g)  SMI keeps in full force all insurance policies identified in
Section 2.14 of the Disclosure Schedule;

          (h)  SMI's officers confer regularly with Exar concerning operational
matters and otherwise report regularly to Exar concerning the status of SMI's
business, condition, assets, liabilities, operations, financial performance and
prospects;

          (i)  SMI immediately notifies Exar of any inquiry, proposal or offer
from any Person relating to any Acquisition Transaction;

          (j)  SMI does not declare, accrue, set aside or pay any dividend or
make any other distribution in respect of any shares of capital stock, and does
not repurchase, redeem or otherwise reacquire any shares of capital stock or
other securities;

          (k)  SMI does not sell or otherwise issue any shares of capital stock
or grant any options, warrants or rights to acquire any capital shares;

          (l)  SMI does not amend its Articles of Incorporation or bylaws, and
does not effect or become a party to any Acquisition Transaction,
recapitalization, reclassification of shares, stock split, reverse stock split
or similar transaction;

          (m)  SMI does not form any subsidiary or acquire any equity interest
or other interest in any other Entity;

          (n)  SMI does not make any capital expenditure, except for capital
expenditures that are made in the Ordinary Course of Business, and that, when
added to all other capital expenditures made on behalf of SMI during the Pre-
Closing Period, such capital expenditures do not exceed $50,000 in the
aggregate;

          (o)  SMI does not enter into, amend or terminate any Contract or any
material agreement except for in the Ordinary Course of Business;
          (p)  SMI does not make any loans to or engage in any transactions with
any of its shareholders, directors or employees other than in the Ordinary
Course of Business.

          (q)  SMI does not incur, assume or otherwise become subject to any
Liability, except for current liabilities (of the type required to be reflected
in the "liabilities" column of a balance sheet prepared in accordance with GAAP)
incurred in the Ordinary Course of Business;

          (r)  SMI does not establish or adopt any Employee Benefit Plan, and
does not pay any bonus or make any profit-sharing or similar payment to, or
increase the amount of the wages, salary, commissions, fringe benefits or other
compensation or remuneration payable to, any of its directors, officers or
employees except pursuant to annual performance reviews in the Ordinary Course
of Business and except for up to $50,000 which may be expended by SMI at the
discretion of its officers as employee bonuses;

          (s)  SMI does not change any of its methods of accounting or
accounting practices in any respect;

          (t)  SMI does not make any Tax election;

          (u)  SMI does not commence any Proceeding except for routine
collection of bills or for breach of this Agreement;

          (v)  SMI does not enter into any transaction or take any other action
outside the Ordinary Course of Business; and

          (w)  SMI does not enter into any transaction or take any other action
that might cause or constitute a Breach of any representation or warranty made
by SMI or any of the Selling Shareholders in this Agreement or in the Closing
Certificate.

     4.3  Filings and Consents.  SMI and each of the Selling Shareholders shall
ensure that:

          (a)  each other filing or notice required to be made or given
(pursuant to any applicable Legal Requirement, Order or Contract, or otherwise)
by SMI or any of the Selling Shareholders in connection with the execution and
delivery of the transactional agreements or in connection with the consummation
or performance of the Transaction (including each of the filings and notices
identified in Part 2.21 of the Disclosure Schedule) is made or given as soon as
possible after the date of this Agreement;

          (b)  each Consent required to be obtained (pursuant to any applicable
Legal Requirement, Order or Contract, or otherwise) by SMI or any of the Selling
Shareholders in connection with the execution and delivery of any of the
transactional agreements or in connection with the consummation or performance
of any of the Transactions (including each of the Consents identified in Part
2.21 of the Disclosure Schedule) is obtained as soon as possible after the date
of this Agreement and remains in full force and effect through the Closing;

          (c)  SMI promptly delivers to Exar a copy of each filing made, each
notice given and each Consent obtained by SMI or any Selling Stockholder during
the Pre-Closing Period; and

          (d)  during the Pre-Closing Period, SMI and its Representatives
cooperate with Exar and with Exar's Representatives, and prepare and make
available such documents and take such other actions as Exar may request in good
faith, in connection with any filing, notice or Consent that Exar is required or
elects to make, give or obtain.

     4.4  Notification; Updates to Disclosure Schedule.

          (a)  During the Pre-Closing Period, SMI and the Selling Shareholders
shall promptly notify Exar in writing of:

               (i)  the discovery by SMI or any of the Selling Shareholders of
any event, condition, fact or circumstance that occurred or existed on or prior
to the date of this Agreement and that caused or constitutes a breach of any
representation or warranty made by SMI or any of the Selling Shareholders in
this Agreement;

               (ii) any event, condition, fact or circumstance that occurs,
arises or exists after the date of this Agreement and that would cause or
constitute a breach of any representation or warranty made by SMI or any of the
Selling Shareholders in this Agreement if (A) such representation or warranty
had been made as of the time of the occurrence, existence or discovery of such
event, condition, fact or circumstance, or (B) such event, condition, fact or
circumstance had occurred, arisen or existed on or prior to the date of this
Agreement; and

               (iii)     any breach of any covenant or obligation of SMI or any
of the Selling Shareholders.

          (b)  If any event, condition, fact or circumstance that is required to
be disclosed pursuant to Section 4.4(a) requires any change in the Disclosure
Schedule, or if any such event, condition, fact or circumstance would require
such a change assuming the Disclosure Schedule were dated as of the date of the
occurrence, existence or discovery of such event, condition, fact or
circumstance, then SMI and the Selling Shareholders shall promptly deliver to
Exar an update to the Disclosure Schedule specifying such change.  No such
update shall be deemed to supplement or amend the Disclosure Schedule for the
purpose of (i) determining the accuracy of any of the representations and
warranties made by SMI or any of the Selling Shareholders in this Agreement or
in the Closing Certificate, or (ii) determining whether any of the conditions
set forth in Section 6 has been satisfied.
     4.5  Best Efforts.  During the Pre-Closing Period, SMI and the Selling
Shareholders shall use their Best Efforts to cause the conditions set forth in
Section 6 to be satisfied on a timely basis.

SECTION 5.     COVENANTS OF EXAR

     Exar covenants and agrees as follows:

     5.1  Negative Covenants.  From the date of this Agreement until the
Closing, Exar will not, except as otherwise contemplated by this Agreement or
unless SMI shall otherwise consent in writing:

          (a)  Take any action which would cause any of its representations or
warranties in this Agreement to become inaccurate (except for such actions as
would not individually or in the aggregate have a material adverse effect on
Exar) or which would prevent any conditions precedent to its obligations under
this Agreement from being satisfied at or prior to the Closing; or

          (b)  Take or permit any action which would prevent the Transaction
from qualifying as a tax-free reorganization under Section 368 of the Code and
Exar will use its best efforts to prevent any of its officers or directors from
taking or permitting any such action.

     5.2  Affirmative Covenants.  Prior to the Closing, Exar will do the
following:

          (a)  Use its Best Efforts to perform and fulfill all conditions and
obligations on its part to be performed and fulfilled under this Agreement, to
the end that the transactions contemplated by this Agreement shall be fully
carried out;
          (b)  Use its Best Efforts to obtain all authorizations, consents and
permits of others required to permit the consummation by Exar of the
transactions contemplated by this Agreement; and

          (c)  Promptly advise SMI in writing of the occurrence of any event
which causes the representations or warranties made by Exar in this Agreement or
the information contained in the Exar Disclosure Schedules to be incomplete or
inaccurate in any material respect.

     5.3  Post-Closing Covenants.

          (a)  Effective as of the Closing or promptly thereafter, Exar shall
cause SMI to do the following:

               (1)  cancel the $1,250,000 loan owed to Exar pursuant to the
Credit Agreement dated May, 1994, together with all interest then accrued and
unpaid.  Such cancellation shall constitute a capital contribution by Exar to
SMI;

               (2)  complete the transactions with Rohm listed in Section
1.5(a).

          (b)  Exar also agrees to vote its SMI stock in favor of James Knutti
as a director of SMI during the Employment Term as defined in Exhibit G; such
board of directors shall be made up of three directors a majority of which shall
be Exar appointees.

SECTION 6.     CONDITIONS PRECEDENT TO OBLIGATIONS OF EXAR

     The obligations of Exar to consummate the transactions contemplated by this
Agreement are subject to the fulfillment, prior to or upon the Closing, of the
following conditions precedent:

     6.1  Due Diligence.  Exar shall have received all documents it may
reasonably request related to SMI.  Exar shall have satisfactorily completed its
investigation and review of SMI's business, assets, liabilities, operations,
financial performance and prospects including, but not limited to, regulatory
matters, and shall be satisfied with the results of that investigation and
review.

     6.2  Compliance with Covenants and Conditions; Representations and
Warranties Correct.  SMI shall have complied with and performed in all material
respects each covenant and condition contained in this Agreement to be performed
by it at or prior to the Closing; the representations and warranties of SMI
contained in this Agreement shall have been true and correct as of the date
hereof and shall be true and correct as of the Closing with the same effect as
though made on the Closing.

     6.3  No Material Adverse Effect.  After the date hereof, there shall have
been no event which has had a material adverse effect on SMI.

     6.4  Officer's Certificate. SMI shall have delivered to Exar a certificate
of SMI, evidencing compliance with the conditions set forth in Sections 6.2 and
6.3.

     6.5  Consents of Others.  The consent to the Transaction of each third
party whose consent is required for SMI to consummate the transactions
contemplated hereby shall have been received, including, without limitation, the
parties to the contracts listed on the SMI Disclosure Schedule.

     6.6  Continuity of Interest Certificates.  Exar shall have received prior
to the Closing Continuity of Interest Certificates signed by each of James
Knutti and Henry Allen in the form attached hereto as Exhibit E.

     6.7  Legal Opinion.  Exar shall have received the opinion of Carr,
DeFilippo & Ferrell, counsel to SMI and the Founders, dated as of the Closing,
substantially in the form of Exhibit F hereto.

     6.8  Employment Agreements.  James Knutti and Henry Allen shall have each
entered into Employment and Noncompetition Agreements with Exar providing for
their employment at Exar or SMI upon mutually agreed upon terms a form of which
is attached hereto as Exhibit G.

     6.9  Resignations.  Exar shall have received the written resignation,
effective as of the Closing, of Henry Allen as a director of SMI.


     6.10 Securities Law Compliance.  The issuance of the Exar Common Stock to
the shareholders of SMI in accordance with this Agreement shall be a valid
offering under the Securities Act, in the reasonable judgment of Exar.

     6.11 Absence of Restraint.  No Proceeding shall be pending or threatened
before any Governmental Authority to restrain, enjoin or otherwise prevent the
consummation of, or which questions the validity or legality of, this Agreement
or the transactions contemplated hereby, and no Legal Requirement, order, writ,
injunction or decree shall have been enacted, entered, issued or promulgated by
any court or Governmental Authority which prohibits or materially restricts the
consummation of this Agreement and the transactions contemplated hereby, and no
such Proceeding shall be threatened.

     6.12 No Proceedings.  No Proceedings shall have commenced against SMI which
could have a material adverse effect on SMI.

     6.13 Required Approvals.  Exar and SMI shall have received all such
governmental approvals, consents, authorizations or modifications as may be
required to permit the performance by Exar and SMI, of their respective
obligations under this Agreement, the consummation of the transactions herein
contemplated and the continuation of SMI's business after the consummation of
the transactions contemplated herein.

     6.14 Legal Requirements.  All permits, licenses, consents and approvals
necessary under any Legal Requirements relating to the sale of securities shall
have been issued or given, and no such permit, license, consent or approval
shall have been revoked, canceled, terminated, suspended or made the subject of
any stop order or proceeding therefor.

     6.15 FIRPTA.  Exar, as agent for the shareholders of SMI, shall have
received a properly executed "FIRPTA" Notification Letter, in form and substance
reasonably acceptable to Exar, which states that shares of SMI do not constitute
"United States Real Property Interests" under Section 897(c) of the Code for
purposes of satisfying Exar's obligations under Treasury Regulations Section
1.1445-2(c)(3).

SECTION 7.     CONDITIONS PRECEDENT TO OBLIGATIONS OF THE SELLING
               SHAREHOLDERS

     The obligation of the Selling Shareholders to consummate the transactions
contemplated herein is subject to the fulfillment, prior to or upon the Closing,
of the following conditions precedent:

     7.1  Compliance with Covenants and Conditions; Representations and
Warranties Correct.  Exar shall have performed in all material respects each
covenant and condition contained in this Agreement to be performed by them at or
prior to the Closing; the representations and warranties of Exar contained in
this Agreement shall be true and correct as of the Closing with the same effect
as though made as of the Closing.

     7.2  Officers' Certificate.  Exar shall have delivered to SMI a certificate
of the Chief Executive Officer and Chief Financial Officer of Exar evidencing
compliance with the conditions set forth in Section 7.1.

     7.3  Absence of Restraint.  No order, statute, rule, regulation, executive
order, decree, judgment, injunction or court order shall have been enacted,
entered, issued, or promulgated by any court or governmental authority which
prohibits or materially restricts the consummation of this Agreement or the
transactions contemplated hereby.

     7.4  No Material Adverse Effect.  After the date hereof, there shall have
been no event which has had a material adverse effect on Exar which was not
disclosed at least three trading days prior to the Closing.

     7.5  Securities Law Compliance.  The issuance of the Exar Common Stock to
the shareholders of SMI in accordance with this Agreement shall be a valid
offering under the Securities Act, in the reasonable judgment of the Selling
Shareholders.

     7.6  No Proceedings.  No Proceedings shall have commenced against Exar
which could have a material adverse effect on Exar.

     7.7  Required Approvals.  Exar and SMI shall have received all such
governmental approvals, consents, authorizations or modifications as may be
required to permit the performance by Exar and SMI, of their respective
obligations under this Agreement, the consummation of the transactions herein
contemplated and the continuation of SMI's business after the consummation of
the transactions contemplated herein.

     7.8  Legal Requirements.  All permits, licenses, consents and approvals
necessary under any Legal Requirements relating to the sale of securities shall
have been issued or given, and no such permit, license, consent or approval
shall have been revoked, canceled, terminated, suspended or made the subject of
any stop order or proceeding therefor.

SECTION 8 INDEMNITY BY FOUNDERS

     8.1  Indemnity.

          (a)  The Founders hereby agree, on the terms and conditions set forth
herein, to jointly and severally indemnify, hold harmless, reimburse and defend
Exar against any Damages incurred in connection with, or arising from, or
attributable to (i) any breach or inaccuracy in any representation made by the
Founders under this Agreement or any schedule, disclosure document or
certification referenced herein, (ii) any breach or failure to perform any
covenant or agreement of SMI or the Founders contained herein and (iii)
enforcement of this Section 8.  The term Damages as used herein shall apply to
Damages incurred or sustained by Exar or SMI, as the case may be, even in the
absence of third party claims and shall not be limited to claims asserted by
third parties.

          (b)  Except as provided in Section 8.4, the indemnification provisions
of this Section 8 shall be the exclusive remedy of Exar for any Damages incurred
in connection with, or arising from, or attributable to the transactions
contemplated by this Agreement.

          (c)  As used in this Section 8, a "Claim" shall be any claim for
indemnification pursuant to this Section 8.

          (d)  The indemnification provided pursuant to this Section 8 shall
apply only to Claims asserted by Exar prior to June 7, 1997.

          (e)  The indemnification provided in this Section 8 shall apply to all
Damages incurred in connection with or arising from or attributable to a Claim.

     8.2  Satisfaction of Indemnification.  Indemnification under this Article 8
shall be satisfied jointly and severally by the Founders (including, without
limitation, by right of setoff against any Earn-Out Payments (as defined
below)).  However, (i) neither Founder shall be liable for Damages in excess of
the aggregate of (A) the fair market value of any Exar Common Stock received by
him in this Transaction and held by him on the date of satisfaction of the
Claim, plus (B) the net sale price of any Exar Common Stock received by him in
this Transaction and sold by him prior to the date of satisfaction of the Claim,
(ii) except with respect to misrepresentations made in Section 2.24, 2.25 or
2.26, a Founder making payment to Exar for such breaches shall be entitled to
contribution from the other Founder in proportion to the aggregate purchase
price received by each of them under this Agreement and, (iii) except with
respect to misrepresentations made in Section 2.24, 2.25 or 2.26, the Founders
shall not be liable for Damages unless and until the aggregate, cumulative
Damages exceed $25,000, provided that if aggregate, cumulative Damages exceed
such amount, the Founders shall be liable, jointly and severally, for the entire
amount of such Damages from the first dollar, provided further, that all
materiality and dollar qualifications contained in this Agreement shall be
disregarded in calculating the amount of aggregate, cumulative Damages.
Founders may satisfy Claims hereunder by means of either paying cash or
cancelling outstanding shares of Exar Common Stock owned by them, with such
shares to be valued at the trading price of such shares on the day prior to
their cancellation.

     8.3  Third-Party Claims.   In the event Exar becomes aware of a third-party
claim which Exar believes may result in a demand under this Section 8, Exar
shall notify the Founders of such claim, and the Founders shall be entitled, at
their own expense, to participate in any defense of such claim.  Exar will use
its best efforts to defend such third party claim and the Founders shall be kept
fully informed of such claim at all stages thereof.  Exar will not consent to
the entry of any judgment or enter into any settlement with respect to any such
claim without the prior written consent of the Founders (not to be unreasonably
withheld), and in any event, any such settlement shall not be determinative of
liability for indemnification hereunder.

     8.4  Fraud.  Notwithstanding any provision of this Agreement to the
contrary, (i) liability of any Selling Shareholder for common law fraud,
intentional misrepresentation or other claim involving intentional misconduct
shall not be limited in amount, procedure for dispute resolution or as to the
time during which a claim may be made and (ii) no Selling Shareholder shall be
personally liable for the fraud, intentional misrepresentation or intentional
misconduct of another Selling Shareholder.

     8.5  Survival of Representations and Warranties.  No disclosure by SMI or
the Founders nor any investigation by or on behalf of Exar with respect to SMI
shall be deemed to affect Exar's reliance on the representations, warranties,
covenants or agreements contained herein or to waive Exar's rights to indemnity
as provided herein for the breach or inaccuracy or failure to perform or comply
with any representation, warranty, covenant or agreement of SMI or any Founder.
The indemnity obligations of the Founders under this Section 8 (and the
representations, warranties, covenants and agreements of SMI and the Founders
under this Agreement) shall survive the Closing and shall terminate as provided
in Section 8.1(d) (with such representations and warranties terminating
concurrently with the termination of such indemnity obligations).

SECTION 9.     EARN-OUT PAYMENTS FOR FOUNDERS

     9.1  Calculation of Earn-Out Payments.

          (a)  Earn-Out Payments.  As soon as practicable following completion
of the audit of Exar's consolidated financial statements by Exar's independent
auditors for each fiscal year ending March 31 between 1996 and 2001, the "Earn-
Out Payments" shall be determined as follows:

               (i)  if SMI's Gross Margin Dollar Contribution (as defined below)
for any Exar fiscal year ending on or before March 31, 2001 (the "Measurement
Period") is less than $5,000,000, then the Earn-Out Payment for such fiscal year
shall be zero (0);

               (ii) if SMI's Gross Margin Dollar Contribution for any fiscal
year within the Measurement Period equals or exceeds $5,000,000 then the Earn-
Out Payment for such fiscal year shall equal $500,000, subject to Section 9.1(b)
below; and

               (iii)     if SMI's Gross Margin Dollar Contribution for any
fiscal year within the Measurement Period equals or exceeds $10,000,000, then
the Earn-Out Payment for such fiscal year shall be $1,000,000, subject to
Section 9.1(b) below.

          (b)  Maximum Earn-Out Payments.  Only a single payment shall be made
pursuant to each of Section 9.1(a)(ii) and 9.1(a)(iii).  If the benchmark
established under Section 9.1(a)(iii) is achieved in a particular fiscal year
and no payment has been made previously under Section 9.1(a)(ii), then the Earn-
Out Payment at that time shall be $1,500,000.  In no event shall the aggregate
Earn-Out Payments exceed $1,500,000.

          (c)  Reductions in Earn-Out Payments.  Any one or more distributions
(such distributions collectively, the "Distributions") of the Earn-Out Payments
pursuant to Section 9.2 shall be subject to reduction if Exar elects pursuant to
Section 8.2 to set off against one or more of the Distributions an amount equal
to the amount of any Damages.

          (d)  Definitions.

          "Gross Margin Dollar Contribution" shall mean the gross margin of the
SMI business included in Exar's consolidated financial statements, before
consolidating elimination entries, prepared in accordance with GAAP on a basis
consistent with Exar's audited financial statements for the year ended March 31,
1995 as certified by the independent accountants for Exar.  Exar hereby confirms
to the Founders that (i) the calculation of gross margin as described above is
the net product sales of the SMI business, plus nonrecurring engineering fees,
less the cost of goods sold, and (ii) such gross margin calculation excludes all
research and development costs, sales costs, general and administrative costs,
and engineering costs (other than that involved in production functions such as
QA/QC).

          For purposes of measuring Gross Margin Dollar Contribution, Exar shall
account for the SMI Business (as defined below) as a separate business segment.
Any accrual, deduction or allocation made or taken for any management, service,
overhead or other charge shall be applied against the SMI Business only when SMI
elects, because it expects to realize a cost advantage thereby, to utilize
services or facilities of Exar in lieu of procuring such services or facilities
from another source.  Any such allocation or charge shall be applied by Exar at
rates or deemed prices that are no less favorable to the SMI Business than those
that Exar applies to its other independent business units.  The "SMI Business"
shall mean all revenues (together with the associated costs) derived from the
sale of products designed and developed by SMI or from the licensing of any such
designs or elements of such designs, whether developed before or after the
Closing, and regardless of the brand name under which such products may be sold.

          The Founders may challenge the calculation of the Gross Margin Dollar
Contribution and shall use an independent auditor (the "Founders' Auditor") to
assist it in reviewing the calculation and proposing an alternative calculation,
at the expense of the Founders.  The identity of the Founders' Auditor shall be
subject to the approval of Exar, such approval not to be unreasonably withheld,
and the execution of a confidentiality agreement in customary form.  If the
Founders' calculation for the Measurement Period exceeds Exar's calculation of
the Gross Margin Dollar Contribution for such period in a manner that would have
resulted in the payment of an additional Earn-Out Payment, then the Founders may
deliver a notice to Exar disagreeing with Exar's calculation and setting forth
the Founders calculation of such amount.  If a notice of disagreement shall have
been delivered to Exar by the Founders pursuant to the preceding sentence, Exar
and the Founders shall, during the 20 days following such delivery, use all
commercially reasonable efforts to reach agreement.  If during such period the
parties are unable to reach agreement regarding the Gross Margin Dollar
Contribution for such period, Exar and the Founders shall promptly thereafter
select an Accounting Referee (as defined below) and cause such Accounting
Referee promptly to review this Agreement and the respective parties'
calculations for the purpose of calculating the Gross Margin Dollar
Contribution.  The Accounting Referee shall deliver to Exar and the Founders as
promptly as practicable a report setting forth such calculation.  Such report
shall be final and binding upon Exar and the Founders.  The cost of such review
and report shall be borne by (i) Exar if the Founders' calculation of the Gross
Margin Dollar Contribution is closer to the Accounting Referee's calculation, or
(ii) the Founders if the Exar's calculation of the Gross Margin Dollar
Contribution is closer to the Accounting Referee's calculation, or (iii) both
parties equally if each party's calculation differs from the Accounting
Referee's calculation by the same amount.  The "Accounting Referee" shall mean a
reputable firm of independent auditors of national standing other than Exar's or
the Founders' independent auditors.

     9.2  Distributions of Earn-Out Payments.  As soon as practicable following
the calculation of the Earn-Out Payment, Exar shall distribute additional shares
of Exar Common Stock, as calculated below, reduced by any amounts specified in
Section 9.1(b), to the Founders pro rata based on their shares of SMI Common
Stock owned by each of them immediately before the Closing.  Each date on which
Exar makes such a distribution is referred to herein as a "Distribution Date."

          For purposes of calculating the value of shares of Exar Common Stock,
if any, distributed to the Founders on each of the Distribution Dates, the price
per share of Exar Common Stock shall be deemed to be the average of the closing
prices of Exar Common Stock, as reported by the national edition of The Wall
Street Journal on the Nasdaq National Market (or such other principal securities
exchange or quotation system on which Exar's Common Stock shall be traded or
quoted, or if Exar Common Stock shall not then be so traded or quoted, then the
fair market value of the Exar Common Stock as agreed to by Exar and the Selling
Shareholders) for the 30 trading days ending on the day prior to each such
Distribution Date.

     9.3  Post-Closing Covenants of Exar.

          (a)  Exar shall maintain SMI as a separate business segment, the
financial results for which can be reported as an independent business unit.
Exar shall operate SMI in a manner that is, to the extent practical, consistent
with the manner in which it operates other businesses owned by Exar, taking into
consideration the opportunities, risks and resource requirements of such
businesses.  In this regard, Exar recognizes that the future growth of SMI will
require additional capital to fund operations.  Exar shall take into
consideration the objectives of the Founders to realize the Earn-Out Payments,
and shall seek to achieve a Gross Margin Dollar Contribution which is sufficient
to cause such payments to be made.  However, nothing contained in this Section 9
shall require Exar to make capital investments, incur risks or take actions
which it believes not to be prudent or would be inconsistent with the manner in
which it operates other businesses owned by Exar.

          (b)  In the event there is a Change of Control (as defined below) of
Exar, either (i) the third party acquiring Exar pursuant to such Change of
Control shall agree to assume the obligations of Exar under this Section 9, or
(ii) if such third party does not agree to assume Exar's obligations under this
Section 9, the maximum amount of Earn-Out Payments to which the Founders are
entitled under this Section 9 (less any Earn-Out payments previously distributed
to the Founders) shall become due and payable by Exar upon such Change of
Control and shall be distributed in accordance with Section 9.2 promptly
thereafter.  "Change of Control" shall mean the consummation of a
reorganization, merger or consolidation, in each case, with respect to which
persons who were the stockholders of Exar immediately prior to such
reorganization, merger, consolidation, or a purchase or exchange of Shares do
not immediately thereafter, own more than 50% of the combined voting power
entitled to vote generally in the election of directors of the reorganized,
merger or consolidated company's then outstanding voting securities, or a
liquidation or dissolution of Exar or of the sale or all of substantially all of
the assets of Exar.

SECTION 10.    REGISTRATION RIGHTS.

     10.1 Registration Rights.  Exar shall file with the SEC a registration
statement on Form S-3 (or any successor form to Form S-3) for a public resale
offering of the shares of Exar Common Stock to be issued to the Selling
Shareholders at the Closing (the "Initial Shares") and shall use all
commercially reasonable efforts to cause the Initial Shares to be registered for
the offering on such form and to be qualified in such jurisdictions as the
Selling Shareholders shall reasonably request, and shall use all commercially
reasonable efforts to cause such registration statement to become and remain
effective for the period commencing on the 90th day after the Closing (or such
earlier practicable date) and ending two years after the Closing or, if earlier,
on the date the distribution described in the registration statement is
complete.

          (a)  Exar shall file with the SEC a registration statement or
registration statements on Form S-3 (or any successor form to Form S-3) for a
public resale offering of any shares of Exar Common Stock that may be issued
pursuant to Section 9 ("Earn-Out Shares") and shall use all commercially
reasonable efforts to cause the Earn-Out Shares to be registered for the
offering on such form and to be qualified in such jurisdictions as the Founders
shall reasonably request, and shall use all commercially reasonable efforts to
cause such registration statement or registration statements to become and
remain effective for the periods commencing on the 90th day after each
Distribution Date (or such earlier practicable date) and ending two years after
such Distribution Date or, if earlier, on the date the distribution described in
the registration statement is complete.  Such registration shall be conditioned
on each Selling Shareholder agreeing that all sales made pursuant to such
registration statement or registration statements shall be made to or through
brokerage firm designated by Exar in its discretion and identified in writing to
the Selling Shareholder.

          (b)  In the case of any registration pursuant to this Section 10.1,
Exar shall keep each Selling Shareholder advised of the initiation and
completion of such registrations.  At its expense, Exar will promptly:

               (i)  Prepare and file with the SEC the registration statements
described in Sections 10.1(a) and (b) above and thereafter use its best efforts
to cause such registration statements to become effective;

               (ii) Prepare and file with the SEC such amendments and
supplements to such registration statements and the prospectuses used in
connection with such registration statements as may be necessary to comply with
the provisions of the Securities Act with respect to the disposition of all
securities covered by such registration statements;

               (iii)     Furnish to the Selling Shareholders such numbers of
copies of a prospectus, including a preliminary prospectus, in conformity with
the requirements of the Securities Act, and such other documents as they may
reasonably request in order to facilitate the disposition of the securities
covered by such registration statements;

               (iv) Use all commercially reasonable efforts to register and
qualify the securities covered by such registration statements under such other
securities or Blue Sky laws of such jurisdictions as shall be reasonably
requested by the Selling Shareholders, provided that Exar shall not be required
in connection therewith or as a condition thereto to qualify to do business or
to file a general consent to service of process in any such states or
jurisdictions;

               (v)  Notify each Selling Shareholder covered by such registration
statements at any time when a prospectus relating thereto is required to be
delivered under the Securities Act of the happening of any event as a result of
which the prospectus included in such registration statements, as then in
effect, includes an untrue statement of a material fact or omits to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading in the light of the circumstances then existing;

               (vi) Cause all such shares of Exar Common Stock to be listed on
each securities exchange or market system on which similar securities issued by
the Exar are then listed; and

               (vii)     Provide a transfer agent and registrar for all such
shares of Exar Common Stock not later than the effective dates of such
registration statements.

     10.2 Piggyback Registration.

          (a)  If (but without any obligation to do so) Exar proposes to
register any of its securities under the Securities Act (other than a
registration effected solely to implement an employee benefit plan, a
transaction to which Rule 145 of the SEC is applicable or any other form or type
of registration in which the Shares and the shares of Exar Common Stock that may
be issued pursuant to Section 9 (collectively the "Registrable Securities")
cannot be included pursuant to SEC rule of practice), including for this purpose
a registration effected by Exar for stockholders other than the holders of
Registrable Securities (the "Holders"), Exar will promptly give written notice
to all Holders of such registration.  If such registration is proposed to be on
a form which permits inclusion of the Registrable Securities, upon the written
request (stating the intended method of disposition of such securities) of any
Holders given within ten (10) days after transmittal by Exar to the holders of
such notice, Exar will, subject to the limits contained in Section 10.2(b), use
all commercially reasonable efforts to cause all such Registrable Securities of
said requesting holders to be registered under the Securities Act.
(b)  If the registration of which Exar gives notice pursuant to
Section 10.2(a) is for a registered public offering involving an underwriting,
Exar shall so advise the Holders as a part of the written notice given pursuant
to Section 10.2(a).  In such event the right of any Holder to registration
pursuant to this Section 10.2 shall be conditioned upon such Holder's
participation in such underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting to the extent provided herein.  All
Holders proposing to distribute their securities through such underwriting shall
(together with Exar and the other holders distributing their securities through
such underwriting) enter into an underwriting agreement in customary form with
the underwriter or underwriters selected for such underwriting by Exar.
Notwithstanding any other provision of this Section 10.2, if the underwriter
managing such registration determines that marketing or economic conditions
require a limitation of the number of securities to be underwritten, the
underwriter may exclude some or all Registrable Securities from such
registration and underwriting.  Exar shall so advise all Holders (except those
Holders who have indicated to Exar their decision not to distribute any of their
Registrable Securities through such underwriting), and the number of shares of
Registrable Securities that may be included in the registration and underwriting
shall be allocated among such Holders in proportion, as nearly as practicable,
to the respective amounts of Registrable Securities owned by such Holders at the
time of filing the registration statement.  No Registrable Securities excluded
from the underwriting by reason of the underwriter's marketing limitation shall
be included in such registration.  If any Holder disapproves of the terms of any
such underwriting, such person may elect to withdraw therefrom by written notice
to Exar and the underwriter.  The Registrable Securities so withdrawn from such
underwriting shall also be withdrawn from such registration; provided, however,
that, if by the withdrawal of such shares a greater number of Registrable
Securities held by other Holders may be included in such registration (up to the
maximum of any limitation imposed by the underwriters), then Exar shall offer to
all Holders who have included Registrable Securities in the registration the
right to include additional Registrable Securities in the same proportion used
above in determining the underwriter limitation.

          (c)  All underwriting discounts and selling commissions applicable to
the sale of Registrable Securities pursuant to this Section 10.2 shall be borne
by the Holders of the securities so registered pro rata on the basis of the
number of shares so registered and, all other expenses incurred in connection
with any registration under Section 10.2 shall be borne by Exar.

          (d)  The Holder or Holders of Registrable Securities included in any
registration shall furnish to Exar such information regarding such Holder or
Holders and the distribution proposed by such Holder or Holders as Exar may
request in writing and as shall be required in connection with any registration,
qualification or compliance referred to in this Section 10.

     10.3 Indemnification.

          (a)  Exar agrees to indemnify, to the extent permitted by law, each
holder of Exar Common Stock with rights under this Section 10, against all
Damages caused by any untrue or alleged untrue statement of material fact
contained in any registration statement, prospectus or preliminary prospectus or
any amendment thereof or supplement thereto or any omission or alleged omission
of a material fact required to be stated therein or necessary to make the
statements therein not misleading, except insofar as the same are caused by or
contained in any information furnished in writing to Exar by such holder
expressly for use therein or by such holder's failure to deliver a copy of the
registration statement or prospectus or any amendments or supplements thereto
after Exar has furnished such holder with a sufficient number of copies of the
same.

          (b)  In connection with any registration statement in which a holder
of Exar Common Stock with rights under this Section 10 is participating, each
such holder will furnish to Exar in writing such information and affidavits as
Exar reasonably requests for use in connection with any such registration
statement or prospectus and, to the extent permitted by law, will indemnify
Exar, its directors and officers and each Person who controls Exar (within the
meaning of the Securities Act) against all Damages resulting from any untrue or
alleged untrue statement of material fact contained in the registration
statement, prospectus or preliminary prospectus or any amendment thereof or
supplement thereto or any omission or alleged omission of a material fact
required to be stated therein or necessary to make the statements therein not
misleading, but only to the extent that such untrue statement or omission is
contained in any information or affidavit so furnished in writing by such
holder; provided that the obligation to indemnify will be several, not joint and
several, among such holders and the liability of each such holder will be in
proportion to and limited to the net amount received by such holder from the
sale of Exar Common Stock with rights under this Section 10, pursuant to such
registration statement.

          (c)  Any Person entitled to indemnification hereunder will (i) give
prompt written notice to the indemnifying party of any claim with respect to
which it seeks indemnification and (ii) unless in such indemnified party's
reasonable judgment a conflict of interest between such indemnified and
indemnifying parties may exist with respect to such claim, permit such
indemnifying party to assume the defense of such claim with counsel reasonably
satisfactory to the indemnified party.  If such defense is assumed, the
indemnifying party will not be subject to any liability for any consent to the
entry of any judgment or any settlement made by the indemnified party without
its consent (but such consent will not be unreasonably withheld).  An
indemnifying party who is not entitled to, or elects not to, assume the defense
of a claim will not be obligated to pay the fees and expenses of more than one
counsel for all parties indemnified by such indemnifying party with respect to
such claim, unless in the reasonable judgment of any indemnified party a
conflict of interest may exist between such indemnified party and any other of
such indemnified parties with respect to such claim.

          (d)  The indemnification provided for under this Agreement will remain
in full force and effect regardless of any investigation made by or on behalf of
the indemnified party or any officer, director or controlling person of such
indemnified party and will survive the transfer of securities and the
Transaction.  Exar also agrees to make such provisions, as are reasonably
requested by any indemnified party, for contribution to such party in the event
Exar's indemnification is unavailable for any reason.

     10.4 Current Public Information.  Until the rights specified in Sections
10.1(a) and (b) are fully exercised or expire, Exar will timely file all reports
required to be filed by it under the Securities Act and the Securities Exchange
Act of 1934, as amended, and the rules and regulations adopted by the SEC
thereunder, and will take such further action as any holder or holders of Exar
Common Stock with rights under Section 10.1 may reasonably request, all to the
extent required to enable such holders to sell their shares pursuant to Form S-3
or similar registration form hereafter adopted by the SEC.  Upon written
request, Exar will deliver to such holders a written statement as to whether it
has complied with such requirements.

     10.5 Termination of Registration Rights.  Notwithstanding the foregoing
provisions of this Section 10, Exar's obligations pursuant to this Section 10
shall terminate upon (a) July 3, 2003 or (b) if earlier, with respect to a given
Holder, at the time such Holder may sell his or her shares of Exar Common Stock
in compliance with Rule 144 or 145 under the Securities Act.

     10.6 Transferability of Registration Rights.  The rights under this Section
10 are not transferable except in connection with (a) a transfer by will or
intestacy and (b) estate planning transfers consisting of gifts to the spouse or
issue of the transferee and transfers to trusts for the benefit of the spouse or
issue of the transferee.

SECTION 11.    TERMINATION OF AGREEMENT

     11.1 Termination.  At any time prior to the Closing, this Agreement may be
terminated:

          (a)  by mutual consent of all the parties;

          (b)  by Exar if (i) there has been a material breach by SMI or the
Selling Shareholders of any covenant, representation or warranty contained in
this Agreement, Exar has notified SMI or the Selling Shareholders in writing of
the existence of such breach and SMI or the Selling Shareholders has failed to
cure such breach within 10 days after receiving such notice, or (ii) the Closing
shall not have occurred prior to July 7, 1995, and Exar is not, at the time of
termination, in default of the observance of or the due and timely performance
of any of its covenants and agreements contained in this Agreement;

          (c)  by SMI or the Selling Shareholders if (i) there has been a
material breach by Exar of a covenant, representation or warranty contained in
this Agreement, SMI has notified Exar in writing of the existence of such breach
and Exar has failed to cure such breach within 10 days after receiving such
notice, or (ii) the Closing shall not have occurred prior to July 7, 1995, and
SMI is not, at the time of termination, in default of the observance of or the
due and timely performance of any of its covenants and agreements contained in
this Agreement; or

          (d)  by either Exar or SMI if (i) there shall be a non-appealable
order of a federal or state court in effect preventing consummation of the
Transaction or (ii) there shall be any action taken, or any statute, rule,
regulations or order enacted, promulgated, issued or deemed applicable to the by
any Governmental Authority that would make consummation of the illegal.

     11.2 Effect of Termination.  If this Agreement shall be terminated as
provided in Section 11.1, this Agreement shall be of no further force or effect
(except as otherwise provided in Section 12.3) and:

          (a)  there shall be no liability on the part of any party hereto to
any other party except for (i) payment of expenses, fees and payments pursuant
to Section 11.3, (ii) if appropriate, payment of legal fees pursuant to Section
12.3 and (iii) any damages for breach of this Agreement; and

          (b)  each party shall redeliver all documents, work papers or other
materials of the other party relating to the transaction contemplated hereby,
whether obtained before or after the execution of this Agreement, to the party
furnishing the same and all filings, applications or other submissions made
pursuant to this Agreement shall, at SMI's or Exar's option, respectively be
withdrawn from the agency or other person to which made.

     11.3 Fees and Expenses.  All fees and expenses incurred in connection with
this Agreement will be paid by the party incurring such expense.  The Founders
confirm that they will be solely responsible for the fees and expenses of Carr,
DeFilippo & Ferrell up to $20,000 in connection with this Agreement and the
transactions contemplated hereby and SMI shall be responsible for any fees and
expenses over $20,000; however, the aggregate amount of such fees and expenses
paid by the Founders and SMI shall not exceed $25,000.

     11.4 Extension of Time; Waivers.  At any time prior to the Closing:

          (a)  Exar may (i) extend the time for the performance of any of the
obligations or other acts of SMI, and (ii) waive compliance with any of the
agreements or conditions contained herein to be performed by SMI.  Any agreement
on the part of Exar to any such extension or waiver shall be valid only if set
forth in an instrument in writing signed by Exar; and

          (b)  SMI may (i) extend the time for the performance of any of the
obligations or other acts of Exar and (ii) waive compliance with any of the
agreements or conditions contained herein to be performed by Exar.  Any
agreement on the part of SMI to any such extension or waiver shall be valid only
if set forth in an instrument in writing signed on behalf of SMI.

SECTION 12     MISCELLANEOUS

     12.1 Amendment.  This Agreement may be amended with the approval of the
Board of Directors of Exar and SMI and with the approval of the Selling
Shareholders at any time before the Closing.  This Agreement may not be amended
except by an instrument in writing signed on behalf of each of the parties
hereto.

     12.2 Entire Agreement; Counterparts; Applicable Law.  This Agreement and
the agreements contemplated hereby and by the exhibits hereto (a) constitute the
entire agreement and supersede all prior agreements and understandings, both
written and oral, among the parties with respect to the subject matter hereof,
(b) may be executed in several counterparts, each of which will be deemed an
original and all of which shall constitute one and the same instrument and (c)
shall be governed in all respects, including validity, interpretation and
effect, by the laws of the State of California as applied to contracts entered
into and to be performed entirely within California.

     12.3 Attorneys' Fees.  In any action at law or suit in equity to enforce
this Agreement or the rights of the parties hereunder, the prevailing party in
such action or suit shall be entitled to receive a reasonable sum for its
attorneys' fees and all other reasonable costs and expenses incurred in such
action or suit.

     12.4 Assignability.  This Agreement shall be binding upon, and shall be
enforceable by and inure to the benefit of, the parties named herein and their
respective successors; provided, however, that without the prior written consent
of the other parties, this Agreement may not be assigned by any party except (a)
to a successor in interest through merger, consolidation, reorganization, sale
of substantially all assets or similar transaction for any party that is an
entity or (b) a transfer to another entity that is a member of the same
affiliated group.  Any attempted assignment in violation of this Section 13.4
shall be void and of no effect.

     12.5 Notices.  All notices and other communications pursuant to this
Agreement shall be in writing and shall be deemed given if delivered personally,
telecopied, sent by nationally-recognized, overnight courier or mailed by
registered or certified mail (return receipt requested), postage prepaid, to the
parties at the following addresses (or at such other address for a party as
shall be specified by like notice):

     To SMI:                       with a copy to:

     Silicon Microstructures, Inc.           Carr, DeFilippo & Ferrell
     46725 Fremont Blvd.                     2225 East Bayshore Road
     Fremont, CA  94538                      Second Floor
     Attn:  Chief Executive Officer          Palo Alto, CA  94303
     Telephone: (510) 490-5010               Attn: Barry Carr, Esq.
     Fax: (510) 490-1119                     Telephone: (415) 812-3410
                                             Fax: (415) 812-3444

     To Exar:                      with a copy to:

     Exar Corporation                   Cooley Godward Castro Huddleson
                                        & Tatum
     2222 Qume Drive                    Five Palo Alto Square
     San Jose, CA  95161                3000 El Camino Real
     Attn:  Chief Financial Officer     Palo Alto, CA  94306
     Telephone:  (408) 434-6400         Attn:  Robert L. Jones, Esq.
     Fax:  (408) 435-1712               Telephone: (415) 843-5000
                                        Fax: (415) 857-0663
     To Rohm:

     Rohm Corporation
     2150 Commerce Drive
     San Jose, CA 95131
     Attn:  Jerry Fielder
     Telephone: (408) 432-0500
     Fax: (408) 434-6444

     To the Selling Shareholders:

     James Knutti and                   Rohm U.S.A. Inc.
     Henry Allen at the                 At the address set forth
     address set forth above            above for Rohm Corporation
     for SMI
     with a copy to
     Carr, DeFilippo & Ferrell

All such notices and other communications shall be deemed to have been received
(a) in the case of personal delivery, on the date of such delivery, (b) in the
case of a telecopy, when the party receiving such telecopy shall have confirmed
receipt of the communication, (c) in the case of delivery by nationally-
recognized, overnight courier, on the business day following dispatch and (d) in
the case of mailing, on the fifth business day following such mailing.

     12.6 Severability.  If any provision of this Agreement is declared invalid
in a court proceeding between the parties, such invalidity shall not invalidate
this Agreement, and this Agreement shall be construed as if the invalid part
were not contained herein, and the rights and obligations of the parties shall
be construed and enforced accordingly.

     12.7 Shareholder Consent.  The parties to this Agreement constitute all of
the shareholders of SMI.  The parties recognize that each of the Founders, as
well as Ronald Guire (who is an officer of Exar as well as a director of SMI),
has a financial interest in the transactions contemplated by this Agreement.  By
their execution hereof, the parties hereby grant their unanimous written
consent, as shareholders of SMI, to this Agreement and the transactions
contemplated hereby.

     12.8 Waiver of Right of First Refusal.  The parties to this Agreement
constitute all of the parties to the First Refusal and Co-Sale Agreements dated
February 8, 1993 which gave Rohm and Exar certain co-sale rights in connection
with any sale of the Founders' stock.  By their execution hereof, each of the
parties hereby waives any rights that it may have had under such First Refusal
and Co-Sale Agreements in connection with the transactions contemplated hereby.

     12.9 Waiver of Liquidation Rights.  Pursuant to the Restated Articles of
Incorporation dated February 3, 1993, (the "Restated Articles") Exar and Rohm as
the holders of all of the outstanding shares of Series A Preferred Stock of SMI
are entitled to a liquidation preference upon the occurrence of a "Company Sale
Liquidation" as defined in the Restated Articles.  By its execution hereof, each
of Exar and Rohm hereby waives its liquidation rights pursuant to the Restated
Articles in connection with the transactions contemplated hereby.

     12.10     Titles.  The titles and captions of the sections and paragraphs
of this Agreement are included for convenience of reference only and shall have
no effect on the construction or meaning of this Agreement.

     12.11     Cooperation.  Exar and SMI each agree to execute and deliver such
other documents, certificates, agreements and other writings and to take such
other actions as may be necessary or desirable in order to consummate
expeditiously or implement the transactions contemplated by this Agreement.

     12.12     Third Party Beneficiary Rights.  No provision of this Agreement
is intended, or shall be interpreted, to provide or create for any third party
beneficiary rights or any other rights of any kind in any client, customer,
affiliate, shareholder, employee, or any party hereto or any other person or
entity, and all provisions hereof will be personal solely among the parties
hereto.

     12.13     Publicity.  Subject to Exar's obligations under applicable
securities laws, the issuance of any reports, statements or press releases
pertaining to this Agreement or the transactions contemplated hereby prior to
the Closing will be subject to the mutual approval of Exar and SMI.


     The parties hereto have caused this Agreement to be executed and delivered
as of                  , 1995.
      -----------------


EXAR CORPORATION,             SILICON MICROSTRUCTURES, INC.,
  a Delaware corporation                  a California corporation


By:                                By:

Title:                                  Title:


                                   ROHM CORPORATION,
                                     a California corporation
                                     (as to Section 1.5 only)


                                   By:

                                   Title:


                                   SELLING SHAREHOLDERS



                                   James W. Knutti


                                   Henry V. Allen


                                   ROHM U.S.A. INC.,
                                     a Delaware corporation

                                   By:

                                   Title:





Exhibit B:     Schedule of Leased Equipment from Rohm Corporation

Exhibit C:     Bill of Sale

Exhibit D:     SMI Disclosure Schedule

Exhibit E:     Continuity of Interest Certificates

Exhibit F:     Opinion of Carr, DeFilippo & Ferrell

Ehxibit G:     Form of Employment Agreement



                                  EXHIBIT 5.1

Exar Corporation
2222 Qume Drive
San Jose, CA  95131

Ladies and Gentlemen:

You have requested our opinion with respect to certain matters in connection
with the filing on July 29, 1995 by Exar Corporation (the "Company") of a
Registration Statement on Form S-3 (the "Registration Statement") with the
Securities and Exchange Commission, with respect to the Company's registration
of 43,334 shares of the Company's Common Stock, $.0001 par value (the "Common
Stock") for resale, issued pursuant to the Agreement and Plan of Reorganization
dated as of June 8, 1995 (the "Plan") between the Company, Silicon
Microstructures, Inc., Rohm Corporation and James W. Knutti, Henry V. Allen and
Rohm U.S.A. Inc.

In connection with this opinion, we have examined and relied upon the
Registration Statement, the Company's Certificate of Incorporation, as amended,
and Bylaws and the Plan, and the originals or copies certified to our
satisfaction of such records, documents, certificates, memoranda and other
instruments as in our judgment are necessary or appropriate to enable us to
render the opinion expressed below.

On the basis of the foregoing, and in reliance thereon, we are of the opinion
that the Common Stock is validly issued, fully paid and nonassessable.

Very truly yours,

COOLEY GODWARD CASTRO
 HUDDLESON & TATUM


By:

Peter M. Stone



     EXHIBIT A


     CERTAIN DEFINITIONS

          For purposes of the Agreement (including this Exhibit A):

          Acquisition Transaction.  "Acquisition Transaction" shall mean any
transaction involving:



          (a)  the sale or other disposition of all or any portion of SMI's
business or assets (other than in the Ordinary Course of Business);

          (b)  the issuance, sale or other disposition of (i) any capital stock
of SMI, (ii) any option, call, warrant or right (whether or not immediately
exercisable) to acquire any capital stock of SMI, or (iii) any security,
instrument or obligation that is or may become convertible into or exchangeable
for any capital stock of SMI; or

          (c)  any merger, consolidation, business combination, share exchange,
reorganization or similar transaction involving SMI.

     Best Efforts.  "Best Efforts" shall mean the efforts that a prudent Person
desiring to achieve a particular result would use in order to ensure that such
result is achieved as expeditiously as possible.

     Breach.  There shall be deemed to be a "Breach" of a representation,
warranty, covenant, obligation or other provision if there is or has been (a)
any inaccuracy in or breach of, or any failure to comply with or perform, such
representation, warranty, covenant, obligation or other provision, or (b) any
claim (by any Person) or other circumstance that is inconsistent with such
representation, warranty, covenant, obligation or other provision; and the term
"Breach" shall be deemed to refer to any such inaccuracy, breach, failure, claim
or circumstance.

     Code.  "Code" shall mean the Internal Revenue Code of 1986.

     Consent.  "Consent" shall mean any approval, consent, ratification,
permission, waiver or authorization (including any Governmental Authorization).

     Contract.  "Contract" shall mean any written, oral, implied or other
agreement, contract, understanding, arrangement, instrument, note, guaranty,
indemnity, representation, warranty, deed, assignment, power of attorney,
certificate, purchase order, work order, insurance policy, benefit plan,
commitment, covenant, assurance or undertaking of any nature.

     Damages.  "Damages" shall include any loss, damage, injury, decline in
value, lost opportunity, Liability, claim, demand, settlement, judgment, award,
fine, penalty, Tax, fee (including any legal fee, expert fee, accounting fee or
advisory fee), charge, cost (including any cost of investigation) or expense of
any nature.

     Employee Benefit Plan.  "Employee Benefit Plan" shall have the meaning
specified in Section 3(3) of ERISA.

     Encumbrance.  "Encumbrance" shall mean any lien, pledge, hypothecation,
charge, mortgage, security interest, encumbrance, equity, trust, equitable
interest, claim, preference, right of possession, lease, tenancy, license,
encroachment, covenant, infringement, interference, Order, proxy, option, right
of first refusal, preemptive right, community property interest, legend, defect,
impediment, exception, reservation, limitation, impairment, imperfection of
title, condition or restriction of any nature (including any restriction on the
voting of any security, any restriction on the transfer of any security or other
asset, any restriction on the receipt of any income derived from any asset, any
restriction on the use of any asset and any restriction on the possession,
exercise or transfer of any other attribute of ownership of any asset).

     Entity.  "Entity" shall mean any corporation (including any non-profit
corporation), general partnership, limited partnership, limited liability
partnership, joint venture, estate, trust, cooperative, foundation, society,
political party, union, company (including any limited liability company or
joint stock company), firm or other enterprise, association, organization or
entity.

     ERISA.  "ERISA" shall mean the Employee Retirement Income Security Act of
1974.

     GAAP.  "GAAP" shall mean generally accepted accounting principles, applied
on a basis consistent with the basis on which the SMI Financial Statements were
prepared.

     Governmental Authorization.  "Governmental Authorization" shall mean any:

          (a)  permit, license, certificate, franchise, concession, approval,
consent, ratification, permission, clearance, confirmation, endorsement, waiver,
certification, designation, rating, registration, qualification or authorization
that is, has been or may in the future be issued, granted, given or otherwise
made available by or under the authority of any Governmental Body or pursuant to
any Legal Requirement; or

          (b)  right under any Contract with any Governmental Body.

     Governmental Body.  "Governmental Body" shall mean any:

          (a)  nation, principality, state, commonwealth, province, territory,
county, municipality, district or other jurisdiction of any nature;
          (b)  federal, state, local, municipal, foreign or other government;

          (c)  governmental or quasi-governmental authority of any nature
(including any governmental division, subdivision, department, agency, bureau,
branch, office, commission, council, board, instrumentality, officer, official,
representative, organization, unit, body or Entity and any court or other
tribunal);

          (d)  multi-national organization or body; or

          (e)  individual, Entity or body exercising, or entitled to exercise,
any executive, legislative, judicial, administrative, regulatory, police,
military or taxing authority or power of any nature.

     Legal Requirement.  "Legal Requirement" shall mean any federal, state,
local, municipal, foreign or other law, statute, legislation, constitution,
principle of common law, resolution, ordinance, code, edict, decree,
proclamation, treaty, convention, rule, regulation, ruling, directive,
pronouncement, requirement, specification, determination, decision, opinion or
interpretation that is, has been or may in the future be issued, enacted,
adopted, passed, approved, promulgated, made, implemented or otherwise put into
effect by or under the authority of any Governmental Body.

     Liability.  "Liability" shall mean any debt, obligation, duty or liability
of any nature (including any unknown, undisclosed, unmatured, unaccrued,
unasserted, contingent, indirect, conditional, implied, vicarious, derivative,
joint, several or secondary liability), regardless of whether such debt,
obligation, duty or liability would be required to be disclosed on a balance
sheet prepared in accordance with generally accepted accounting principles and
regardless of whether such debt, obligation, duty or liability is immediately
due and payable.

     Order.  "Order" shall mean any:

          (a)  order, judgment, injunction, edict, decree, ruling,
pronouncement, determination, decision, opinion, verdict, sentence, subpoena,
writ or award that is, has been or may in the future be issued, made, entered,
rendered or otherwise put into effect by or under the authority of any court,
administrative agency or other Governmental Body or any arbitrator or
arbitration panel; or

          (b)  Contract with any Governmental Body that is, has been or may in
the future be entered into in connection with any Proceeding.

     Ordinary Course of Business.  An action taken by or on behalf of SMI shall
not be deemed to have been taken in the "Ordinary Course of Business" unless:

          (a)  such action is recurring in nature, is consistent with SMI's past
practices and is taken in the ordinary course of SMI's normal day-to-day
operations;

          (b)  such action is taken in accordance with sound and prudent
business practices;

          (c)  such action is not required to be authorized by SMI's
stockholders, SMI's board of directors or any committee of SMI's board of
directors and does not require any other separate or special authorization of
any nature; and

          (d)  such action is similar in nature and magnitude to actions
customarily taken, without any separate or special authorization, in the
ordinary course of the normal day-to-day operations of other Entities that are
engaged in businesses similar to SMI's business.

     Person.  "Person" shall mean any individual, Entity or Governmental Body.
     Pre-Closing Period.  "Pre-Closing Period" shall mean the period commencing
as of the date of the Agreement and ending on the Closing.

     Proceeding.  "Proceeding" shall mean any action, suit, litigation,
arbitration, proceeding (including any civil, criminal, administrative,
investigative or appellate proceeding and any informal proceeding), prosecution,
contest, hearing, inquiry, inquest, audit, examination or investigation that is,
has been or may in the future be commenced, brought, conducted or heard by or
before, or that otherwise has involved or may involve, any Governmental Body or
any arbitrator or arbitration panel.

     Representatives.  "Representatives" shall mean officers, directors,
employees, agents, attorneys, accountants, advisors and representatives.  The
Selling Shareholders and all other Related Parties shall be deemed to be
"Representatives" of SMI.

     Tax.  "Tax" shall mean any tax (including any income tax, franchise tax,
capital gains tax, estimated tax, gross receipts tax, value-added tax, surtax,
excise tax, ad valorem tax, transfer tax, stamp tax, sales tax, use tax,
property tax, business tax, occupation tax, inventory tax, occupancy tax,
withholding tax or payroll tax), levy, assessment, tariff, impost, imposition,
toll, duty (including any customs duty), deficiency or fee, and any related
charge or amount (including any fine, penalty or interest), that is, has been or
may in the future be (a) imposed, assessed or collected by or under the
authority of any Governmental Body, or (b) payable pursuant to any tax-sharing
agreement or similar Contract.



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