CATALYST SEMICONDUCTOR INC
S-8, 1996-08-12
SEMICONDUCTORS & RELATED DEVICES
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<PAGE>   1
        As filed with the Securities and Exchange Commission on August 12, 1996
                                                Registration No. 333-__________
===============================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                ----------------

                                    FORM S-8

                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                ----------------

                          CATALYST SEMICONDUCTOR, INC.
             (Exact name of Registrant as specified in its charter)

       DELAWARE                                         77-0083129
(State of incorporation)                   (I.R.S. Employer Identification No.)

                              1250 BORREGAS AVENUE
                           SUNNYVALE, CALIFORNIA 94089
                    (Address of principal executive offices)

                             -----------------------

                 CATALYST SEMICONDUCTOR, INC. STOCK OPTION PLAN
          CATALYST SEMICONDUCTOR, INC. 1993 DIRECTOR STOCK OPTION PLAN
                            (Full title of the Plans)

                             -----------------------

                                C. MICHAEL POWELL
         PRESIDENT, CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
                          CATALYST SEMICONDUCTOR, INC.
                              1250 BORREGAS AVENUE
                           SUNNYVALE, CALIFORNIA 94089
                                 (408) 748-7700
(Name, address and telephone number, including area code, of agent for service)

                             -----------------------

                                    Copy to:

                                   Peter Cohn
                                  Arnold Brown
                                Venture Law Group
                           A Professional Corporation
                               2800 Sand Hill Road
                          Menlo Park, California 94025
                                 (415) 854-4488

                               Page 1 of 28 Pages
                             Exhibit Index on Page 7
               (Calculation of Registration Fee on following page)
<PAGE>   2
<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------
                                          CALCULATION OF REGISTRATION FEE
- ------------------------------------------------------------------------------------------------------------------
                                                                     Proposed      
                                                Maximum Amount        Maximum      Proposed Maximum     Amount of
                                                     to be        Offering Price       Aggregate      Registration
    Title of Securities to be Registered         Registered(1)       Per Share      Offering Price         Fee
- ------------------------------------------------------------------------------------------------------------------
<S>                                             <C>               <C>              <C>                <C>
STOCK OPTION PLAN
   Common Stock,
   $0.001 par value.........................     1,389,000 Shares      $5.60(2)        $7,778,400          $2,682.21
   Common Stock,
   $0.001 par value.........................       141,000 Shares      $6.06(3)        $  854,460          $  294.64

1993 DIRECTOR STOCK OPTION PLAN
   Common Stock,
   $0.001 par value.........................        50,000 Shares      $6.06(3)        $  303,000          $  104.48

                  TOTAL                          1,580,000 Shares                      $8,935,860          $3,081.33
</TABLE>

- -----------------------

(1)      This Registration Statement shall also cover any additional shares of
         Common Stock which become issuable under any of the Plans being
         registered pursuant to this Registration Statement by reason of any
         stock dividend, stock split, recapitalization or any other similar
         transaction effected without the receipt of consideration which results
         in an increase in the number of the Registrant's outstanding shares of
         Common Stock.

(2)      Computed in accordance with Rule 457(h) under the Securities Act of
         1933 (the "Securities Act") solely for the purpose of calculating the
         registration fee. Computation based on the weighted average per share
         exercise price (rounded to nearest cent) of outstanding options under
         the referenced plan, the shares issuable under which are registered
         hereby.

(3)      Estimated in accordance with Rule 457(h) under the Securities Act
         solely for the purpose of calculating the registration fee. The
         computation is based upon the average high and low sale prices of the
         Common Stock as reported on the Nasdaq National Market on August 7,
         1996.


                                      -2-
<PAGE>   3
                               GENERAL INFORMATION

Pursuant to Instruction E of the General Instructions to Form S-8, the contents
of the Registrant's Registration Statement on Form S-8 (SEC File No. 33-62636)
filed on May 11, 1993 are incorporated herein by reference.



                                     PART II
               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Item 3. INCORPORATION OF DOCUMENTS BY REFERENCE.

         The following documents filed with the Securities and Exchange
Commission (the "Commission") are hereby incorporated by reference:

         (a) The Registrant's Annual Report on Form 10-K for the fiscal year
ended April 30, 1996.

         (b) All other reports filed pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934 (the "Exchange Act") since the end of the fiscal
year covered by the Annual Report referred to in (a) above.

         (c) The description of the Registrant's Common Stock contained in the
Registrant's Registration Statement on Form 8-A filed with the Commission under
Section 12 of the Exchange Act on March 24, 1993, including any amendment or
report filed for the purpose of updating such description.

         All documents subsequently filed by the Registrant pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment which indicates that all securities offered hereby have
been sold or which deregisters all securities then remaining unsold, shall be
deemed to be incorporated by reference in this Registration Statement and to be
part hereof from the date of filing such documents.

Item 8.           EXHIBITS.

<TABLE>
<CAPTION>
                     Exhibit
                     Number
                     -------
<S>                                 <C>
                      4.1           Catalyst Semiconductor, Inc. Stock Option
                                    Plan as amended and restated on May 30,
                                    1996.

                      4.2           Catalyst Semiconductor, Inc. 1993 Director
                                    Stock Option Plan as amended and restated on
                                    May 30, 1996.

                      5.1           Opinion of Venture Law Group, A Professional
                                    Corporation.

                     23.1           Consent of Venture Law Group, A Professional
                                    Corporation (included in Exhibit 5.1).

                     23.2           Consent of Independent Accountants (see p.
                                    6).

                     24.1           Powers of Attorney (see p. 5).
</TABLE>


                                      -3-
<PAGE>   4
                                   SIGNATURES


         Pursuant to the requirements of the Securities Act of 1933, the
Registrant, Catalyst Semiconductor, Inc., a corporation organized and existing
under the laws of the State of Delaware, certifies that it has reasonable
grounds to believe that it meets all of the requirements for filing on Form S-8
and has duly caused this Registration Statement to be signed on its behalf by
the undersigned, thereunto duly authorized, in the City of Sunnyvale, State of
California, on this 9th day of August, 1996.

                                  Catalyst Semiconductor, Inc.


                                  By:  /s/ C. Michael Powell
                                       -----------------------------
                                       C. Michael Powell
                                       Chairman of the Board of Directors,
                                       President, Chief Executive Officer and
                                       Chief Financial Officer


                                      -4-
<PAGE>   5
                                POWER OF ATTORNEY

         KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature
appears below constitutes and appoints C. Michael Powell and Daryl E. Stemm,
jointly and severally, his or her attorneys-in-fact and agents, each with the
power of substitution and resubstitution, for him or her and in his or her name,
place or stead, in any and all capacities, to sign any amendments to this
Registration Statement on Form S-8, and to file such amendments, together with
exhibits and other documents in connection therewith, with the Securities and
Exchange Commission, granting to each attorney-in-fact and agent, full power and
authority to do and perform each and every act and thing requisite and necessary
to be done in and about the premises, as fully as he or she might or could do in
person, and ratifying and confirming all that the attorney-in-facts and agents,
or his or her substitute or substitutes, may do or cause to be done by virtue
hereof.

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

<TABLE>
<CAPTION>
            Signature                                    Title                                 Date
            ---------                                    -----                                 ----
<S>                                      <C>                                               <C>
/s/ C. Michael Powell                    Chairman of the Board of Directors,               August 9, 1996
- ------------------------------------       President, Chief Executive Officer and
C. Michael Powell                          Chief Financial Officer (Principal
                                           Executive Officer and Principal
                                           Financial Officer)
                                           

/s/ Radu M. Vanco                        Executive Vice President, Chief Operating         August 9, 1996
- ------------------------------------       Officer and Director
Radu M. Vanco


/s / Daryl E. Stemm                      Director of Finance and Administration and        August 9, 1996
- ------------------------------------       Controller (Principal Accounting Officer)
Daryl E. Stemm

/s/ Lionel M. Allan                      Director                                          August 9, 1996
- ------------------------------------                                                                     
Lionel M. Allan

/s/ Hideyuki Tanigami                    Director                                          August 9, 1996
- ------------------------------------                                                                     
Hideyuki Tanigami

/s/ Patrick Verderico                    Director                                          August 9, 1996
- ------------------------------------                                                                     
Patrick Verderico
</TABLE>


                                       -5-
<PAGE>   6
                                                                   EXHIBIT 23.2


                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the incorporation by reference in this Registration
Statement on Form S-8 of our report dated May 28, 1996 appearing on page F-4 of
Catalyst Semiconductor, Inc.'s Annual Report on Form 10-K for the year ended
April 30, 1996.


PRICE WATERHOUSE LLP


San Jose, California
August 5, 1996

                                     
                                       6
<PAGE>   7
                                INDEX TO EXHIBITS

<TABLE>
<CAPTION>
Exhibit                                                                               Page
 Number                                                                                No.
 ------                                                                               ----
<S>      <C>                                                                          <C>
  4.1    Catalyst Semiconductor, Inc. Stock Option Plan as amended and restated         8
         on May 30, 1996

  4.2    Catalyst Semiconductor, Inc. 1993 Director Stock Option Plan as amended       21
         and restated on May 30, 1996

  5.1    Opinion of Venture Law Group, A Professional Corporation                      27

  23.1   Consent of Venture Law Group, A Professional Corporation (included in
         Exhibit 5.1)

  23.2   Consent of Independent Accountants (see p. 6)

  24.1   Powers of Attorney (see p. 5)
</TABLE>

                                       7




                                      

<PAGE>   1
                                                                    EXHIBIT 4.1


                          CATALYST SEMICONDUCTOR, INC.

                                STOCK OPTION PLAN

                     AS AMENDED AND RESTATED ON MAY 30, 1996

         This Stock Option Plan is an amendment and restatement of the Catalyst
Semiconductor, Inc., Founders' Stock Option Plan.

         1. Purpose of the Plan. The purpose of this Stock Option Plan is to
enable the Company to provide incentive to eligible employees, consultants and
officers whose present and potential contributions are important to the
continued success of the Company, to afford these individuals the opportunity to
acquire a proprietary interest in the Company, and to enable the Company to
enlist and retain in its employment qualified personnel for the successful
conduct of its business. It is intended that this purpose will be effected
through the granting of (a) stock options, (b) stock purchase rights, (c) stock
appreciation rights, and (d) long-term performance awards.

         2. Definitions. As used herein, the following definitions shall apply:

                  (a) "Administrator" means the Board or such of its Committees
as shall be administering the Plan, in accordance with Section 8 of the Plan.

                  (b) "Applicable Laws" means the legal requirements relating to
the administration of stock option plans under applicable securities laws,
Delaware corporate law and the Code.

                  (c) "Board" means the Board of Directors of the Company.

                  (d) "Code" means the Internal Revenue Code of 1986, as
amended.

                  (e) "Committee" means a Committee appointed by the Board in
accordance with Section 9 of the Plan.

                  (f) "Common Stock" means the Common Stock, $.001 par value, of
the Company.

                  (g) "Company" means Catalyst Semiconductor, Inc., a Delaware
corporation, and its predecessor Catalyst Semiconductor, Inc., a California
corporation.

                  (h) "Consultant" means any person, including an advisor,
engaged by the Company or a Parent or Subsidiary to render services and who is
compensated for such services, provided that the term "Consultant" shall not
include Directors who are paid only a director's fee by the Company or who are
not compensated by the Company for their services as Directors.

                  (i) "Continuous Status as an Employee or Consultant" means
that the employment or consulting relationship is not interrupted or terminated
by the Company, or any Parent or Subsidiary. Continuous Status as an Employee or
Consultant shall not be considered interrupted in the case of: (i) any leave of
absence approved by the Administrator, including sick leave, military leave, or
any other personal leave; provided, however, that for purposes of Continuous
Status as an Employee or Consultant, no such leave may exceed ninety (90) days,
unless reemployment upon the expiration of such leave is guaranteed by contract
(including written Company policies) or statute or unless (in the case of
Options and Rights other than Incentive Stock Options) the Administrator has
expressly designated a longer leave period during which (for purposes of such
Options or Rights) Continuous Status as an Employee or Consultant shall
continue; or (ii) transfers between locations of the Company or between the
Company, its Parent, its Subsidiaries or its successor; and provided further
that any vesting or lapsing of the Company's right to repurchase Shares at
their original purchase price shall cease on the
<PAGE>   2
ninety-first (91st) consecutive day of any leave of absence approved by the
Administrator and shall not recommence until such date, if any, upon which the
Consultant or Optionee resumes his or her service with the Company.

                  (j) "Director" means a member of the Board.

                  (k) "Disability" means total and permanent disability as
defined in Section 22(e)(3) of the Code.

                  (l) "Employee" means any person, including Officers and
Directors, employed by the Company or any Parent or Subsidiary of the Company.
Neither service as a Director nor payment of a director's fee by the Company
shall be sufficient to constitute "employment" by the Company.

                  (m) "Exchange Act" means the Securities Exchange Act of 1934,
as amended.

                  (n) "Fair Market Value" means, as of any date, the value of
Common Stock determined as follows:

                           (i) If the Common Stock is listed on any established
stock exchange or a national market system, including without limitation the
National Market System of the National Association of Securities Dealers, Inc.
Automated Quotation ("NASDAQ") System, the Fair Market Value of a Share of
Common Stock shall be the closing sales price for such stock (or the closing
bid, if no sales were reported) as quoted on such system or exchange (or the
exchange with the greatest volume of trading in Common Stock) on the last market
trading day prior to the day of determination, as reported in The Wall Street
Journal or such other source as the Administrator deems reliable;

                           (ii) If the Common Stock is quoted on the NASDAQ
System (but not on the National Market System thereof) or is regularly quoted by
a recognized securities dealer but selling prices are not reported, the Fair
Market Value of a Share of Common Stock shall be the mean between the high bid
and low asked prices for the Common Stock on the last market trading day prior
to the day of determination, as reported in The Wall Street Journal or such
other source as the Administrator deems reliable;

                           (iii) In the absence of an established market for the
Common Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

                  (o) "Incentive Stock Option" means an Option intended to
qualify as an incentive stock option within the meaning of Section 422 of the
Code and the regulations promulgated thereunder.

                  (p) "Long-Term Performance Award" means an award under Section
8 below. A Long-Term Performance Award shall permit the recipient to receive a
cash or stock bonus (as determined by the Administrator) upon satisfaction of
such performance factors as are set out in the recipient's individual grant.
Long-term Performance Awards will be based upon the achievement of Company,
Subsidiary and/or individual performance factors or upon such other criteria as
the Administrator may deem appropriate.

                  (q) "Long-Term Performance Award Agreement" means a written
agreement between the Company and an Optionee evidencing the terms and
conditions of an individual Long-Term Performance Award grant. The Long-Term
Performance Award Agreement is subject to the terms and conditions of the Plan.

                  (r) "Nonstatutory Stock Option" means any Option that is not
an Incentive Stock Option.

                  (s) "Notice of Grant" means a written notice evidencing
certain terms and conditions of an individual Option, Stock Purchase Right, SAR
or Long-Term Performance Award grant. The Notice of Grant is part of the Option
Agreement, the SAR Agreement and the Long-Term Performance Award Agreement.


                                       -2-
<PAGE>   3
                  (t) "Officer" means a person who is an officer of the Company
within the meaning of Section 16 of the Exchange Act and the rules and
regulations promulgated thereunder.

                  (u) "Option" means a stock option granted pursuant to the
Plan.

                  (v) "Option Agreement" means a written agreement between the
Company and an Optionee evidencing the terms and conditions of an individual
Option grant. The Option Agreement is subject to the terms and conditions of the
Plan.

                  (w) "Option Exchange Program" means a program whereby
outstanding options are surrendered in exchange for options with a lower
exercise price.

                  (x) "Optioned Stock" means the Common Stock subject to an
Option or Right.

                  (y) "Optionee" means an Employee or Consultant who holds an
outstanding Option or Right.

                  (aa) "Parent" means a "parent corporation," whether now or
hereafter existing, as defined in Section 424(e) of the Code.

                  (bb) "Plan" means this Stock Option Plan, formerly the
Founders' Stock Option Plan.

                  (cc) "Restricted Stock" means shares of Common Stock subject
to a Restricted Stock Purchase Agreement acquired pursuant to a grant of Stock
Purchase Rights under Section 6 below.

                  (dd) "Restricted Stock Purchase Agreement" means a written
agreement between the Company and the Optionee evidencing the terms and
restrictions applying to stock purchased under a Stock Purchase Right. The
Restricted Stock Purchase Agreement is subject to the terms and conditions of
the Plan and the Notice of Grant.

                  (ee) "Right" means and includes SARs, Long-Term Performance
Awards and Stock Purchase Rights granted pursuant to the Plan.

                  (ff) "Rule 16b-3" means Rule 16b-3 of the Exchange Act or any
successor rule thereto, as in effect when discretion is being exercised with
respect to the Plan.

                  (gg) "SAR" means a stock appreciation right granted pursuant
to Section 5 of the Plan.

                  (hh) "SAR Agreement" means a written agreement between the
Company and an Optionee evidencing the terms and conditions of an individual SAR
grant. The SAR Agreement is subject to the terms and conditions of the Plan.

                  (ii) "Share" means a share of the Common Stock, as adjusted in
accordance with Section 11 of the Plan.

                  (jj) "Stock Purchase Right" means the right to purchase Common
Stock pursuant to Section 7 of the Plan, as evidenced by a Notice of Grant.

                  (kk) "Subsidiary" means a "subsidiary corporation," whether
now or hereafter existing, as defined in Section 424(f) of the Code.

         3. Shares Subject to the Plan. Subject to the provisions of Section 11
of the Plan, the total number of Shares reserved and available for distribution
under the Plan is 3,300,000 Shares. Subject to Section 11 of the Plan, if any
Shares that have been optioned under an Option cease to be subject to such
Option (other than through 


                                       -3-
<PAGE>   4
exercise of the Option), or if any Option or Right granted hereunder is
forfeited or any such award otherwise terminates prior to the issuance of Common
Stock to the participant, the shares that were subject to such Option or Right
shall again be available for distribution in connection with future Option or
right grants under the Plan; provided, however, that Shares that have actually
been issued under the Plan, whether upon exercise of an Option or Right, shall
not in any event be returned to the Plan and shall not become available for
future distribution under the Plan.

         4. Eligibility. Nonstatutory Stock Options and Rights may be granted to
Employees and Consultants. Incentive Stock Options may be granted only to
Employees. If otherwise eligible, an Employee or Consultant who has been granted
an Option or Right may be granted additional Options or Rights.

         5. Limitation on Grants to Employees. Subject to adjustment as provided
in this Plan, the maximum number of Shares which may be subject to Options or
Rights granted to any one Employee under this Plan for any fiscal year of the
Company shall be 750,000. In connection with his or her initial employment, an
Employee may be granted up to an additional 250,000 Shares, which Shares do not
count against the 750,000 limitation.

         6. Options and SARs.

                  (a) Options. The Administrator, in its discretion, may grant
Options to eligible participants and shall determine whether such Options shall
be Incentive Stock Options or Nonstatutory Stock Options. Each Option shall be
evidenced by a Notice of Grant which shall expressly identify the Options as
Incentive Stock Options or as Nonstatutory Stock Options, and be in such form
and contain such provisions as the Administrator shall from time to time deem
appropriate. Without limiting the foregoing, the Administrator may at any time
authorize the Company, with the consent of the respective recipients, to issue
new Options or Rights in exchange for the surrender and cancellation of
outstanding Options or Rights. Option agreements shall contain the following
terms and conditions:

                           (i) Exercise Price; Number of Shares. The per Share
exercise price for the Shares issuable pursuant to an Option shall be such price
as is determined by the Administrator; provided, however, that in the case of an
Incentive Stock Option, the price shall be no less than 100% of the Fair Market
Value of the Common Stock on the date the Option is granted, subject to any
additional conditions set out in Section 6(a)(iv) below.

                           The Notice of Grant shall specify the number of
Shares to which it pertains.

                           (ii) Waiting Period and Exercise Dates. At the time
an Option is granted, the Administrator will determine the terms and conditions
to be satisfied before Shares may be purchased, including the dates on which
Shares subject to the Option may first be purchased. The Administrator may
specify that an Option may not be exercised until the completion of the service
period specified at the time of grant. (Any such period is referred to herein as
the "waiting period.") At the time an Option is granted, the Administrator shall
fix the period within which the Option may be exercised, which shall not be
earlier than the end of the waiting period, if any, nor, in the case of an
Incentive Stock Option, later than ten (10) years, from the date of grant.

                           (iii) Form of Payment. The consideration to be paid
for the Shares to be issued upon exercise of an Option, including the method of
payment, shall be determined by the Administrator (and, in the case of an
Incentive Stock Option, shall be determined at the time of grant) and may
consist entirely of:

                                    (1) cash;

                                    (2) check;

                                    (3) promissory note;


                                       -4-
<PAGE>   5
                                    (4) other Shares which (1) in the case of
Shares acquired upon exercise of an option, have been owned by the Optionee for
more than six months on the date of surrender, and (2) have a Fair Market Value
on the date of surrender not greater than the aggregate exercise price of the
Shares as to which said Option shall be exercised;

                                    (5) delivery of a properly executed exercise
notice together with such other documentation as the Administrator and any
broker approved by the Company, if applicable, shall require to effect an
exercise of the Option and delivery to the Company of the sale or loan proceeds
required to pay the exercise price;

                                    (6) any combination of the foregoing methods
of payment; or

                                    (7) such other consideration and method of
payment for the issuance of Shares to the extent permitted by Applicable Laws.

                           (iv) Special Incentive Stock Option Provisions. In
addition to the foregoing, Options granted under the Plan which are intended to
be Incentive Stock Options under Section 422 of the Code shall be subject to the
following terms and conditions:

                                    (1) Dollar Limitation. To the extent that
the aggregate Fair Market Value of (a) the Shares with respect to which Options
designated as Incentive Stock Options plus (b) the shares of stock of the
Company, Parent and any Subsidiary with respect to which other incentive stock
options are exercisable for the first time by an Optionee during any calendar
year under all plans of the Company and any Parent and Subsidiary exceeds
$100,000, such Options shall be treated as Nonstatutory Stock Options. For
purposes of the preceding sentence, (a) Options shall be taken into account in
the order in which they were granted, and (b) the Fair Market Value of the
Shares shall be determined as of the time the Option or other incentive stock
option is granted.

                                    (2) 10% Stockholder. If any Optionee to whom
an Incentive Stock Option is to be granted pursuant to the provisions of the
Plan is, on the date of grant, the owner of Common Stock (as determined under
Section 424(d) of the Code) possessing more than 10% of the total combined
voting power of all classes of stock of the Company or any Parent or Subsidiary
of the Company, then the following special provisions shall be applicable to the
Option granted to such individual:

                                             (a) The per Share Option price of
Shares subject to such Incentive Stock Option shall not be less than 110% of the
Fair Market Value of Common Stock on the date of grant; and

                                             (b) The Option shall not have a
term in excess of five (5) years from the date of grant.

Except as modified by the preceding provisions of this subsection 6(a) (iv) and
except as otherwise limited by Section 422 of the Code, all of the provisions of
the Plan shall be applicable to the Incentive Stock Options granted hereunder.

                           (v) Other Provisions. Each Option granted under the
Plan may contain such other terms, provisions, and conditions not inconsistent
with the Plan as may be determined by the Administrator.

                           (vi) Buyout Provisions. The Administrator may at any
time offer to buy out for a payment in cash or Shares, an Option previously
granted, based on such terms and conditions as the Administrator shall establish
and communicate to the Optionee at the time that such offer is made.


                                       -5-
<PAGE>   6
                  (b) SARs.

                           (i) In Connection with Options. At the sole
discretion of the Administrator, SARs may be granted in connection with all or
any part of an Option, either concurrently with the grant of the Option or at
any time thereafter during the term of the Option. The following provisions
apply to SARs that are granted in connection with Options:

                                    (1) The SAR shall entitle the Optionee to
exercise the SAR by surrendering to the Company unexercised a portion of the
related Option. The Optionee shall receive in Exchange from the Company an
amount equal to the excess of (1) the Fair Market Value on the date of exercise
of the SAR of the Common Stock covered by the surrendered portion of the related
Option over (2) the exercise price of the Common Stock covered by the
surrendered portion of the related Option. Notwithstanding the foregoing, the
Administrator may place limits on the amount that may be paid upon exercise of
an SAR; provided, however, that such limit shall not restrict the exercisability
of the related Option.

                                    (2) When an SAR is exercised, the related
Option, to the extent surrendered, shall cease to be exercisable.

                                    (3) An SAR shall be exercisable only when
and to the extent that the related Option is exercisable and shall expire no
later than the date on which the related Option expires.

                                    (4) An SAR may only be exercised at a time
when the Fair Market Value of the Common Stock covered by the related Option
exceeds the exercise price of the Common Stock covered by the related Option.

                           (ii) Independent of Options. At the sole discretion
of the Administrator, SARs may be granted without related Options. The following
provisions apply to SARs that are not granted in connection with Options:

                                    (1) The SAR shall entitle the Optionee, by
exercising the SAR, to receive from the Company an amount equal to the excess of
(1) the Fair Market Value of the Common Stock covered by the exercised portion
of the SAR, as of the date of such exercise, over (2) the Fair Market Value of
the Common Stock covered by the exercised portion of the SAR, as of the last
market trading date prior to the date on which the SAR was granted; provided,
however, that the Administrator may place limits on the aggregate amount that
may be paid upon exercise of an SAR.

                                    (2) SARs shall be exercisable, in whole or
in part, at such times as the Administrator shall specify in the Optionee's SAR
agreement.

                           (iii) Form of Payment. The Company's obligation
arising upon the exercise of an SAR may be paid in Common Stock or in cash, or
in any combination of Common Stock and cash, as the Administrator, in its sole
discretion, may determine. Shares issued upon the exercise of an SAR shall be
valued at their Fair Market Value as of the date of exercise.

                  (c) Method of Exercise.

                           (i) Procedure for Exercise; Rights as a Stockholder.
Any Option or SAR granted hereunder shall be exercisable at such times and under
such conditions as determined by the Administrator and as shall be permissible
under the terms of the Plan.

                           An Option may not be exercised for a fraction of a
Share.

                           An Option or SAR shall be deemed to be exercised when
written notice of such exercise has been given to the Company in accordance with
the terms of the Option or SAR by the person entitled to 


                                       -6-
<PAGE>   7
exercise the Option or SAR and full payment for the Shares with respect to which
the Option is exercised has been received by the Company. Full payment may, as
authorized by the Administrator (and, in the case of an Incentive Stock Option,
determined at the time of grant) and permitted by the Option Agreement consist
of any consideration and method of payment allowable under subsection 6(a)(iii)
of the Plan. Until the issuance (as evidenced by the appropriate entry on the
books of the Company or of a duly authorized transfer agent of the Company) of
the stock certificate evidencing such Shares, no right to vote or receive
dividends or any other rights as a stockholder shall exist with respect to the
Optioned Stock, notwithstanding the exercise of the Option. No adjustment will
be made for a dividend or other right for which the record date is prior to the
date the stock certificate is issued, except as provided in Section 10 of the
Plan.

                           Exercise of an Option in any manner shall result in a
decrease in the number of Shares which thereafter shall be available, both for
purposes of the Plan and for sale under the Option, by the number of Shares as
to which the Option is exercised. Exercise of an SAR in any manner shall, to the
extent the SAR is exercised, result in a decrease in the number of Shares which
thereafter shall be available for purposes of the Plan, and the SAR shall cease
to be exercisable to the extent it has been exercised.

                           (ii) Rule 16b-3. Options and SARs granted to
individuals subject to Section 16 of the Exchange Act ("Insiders") must comply
with the applicable provisions of Rule 16b-3 and shall contain such additional
conditions or restrictions as may be required thereunder to qualify for the
maximum exemption from Section 16 of the Exchange Act with respect to Plan
transactions.

                           (iii) Termination of Employment or Consulting
Relationship. In the event an Optionee's Continuous Status as an Employee or
Consultant terminates (other than upon the Optionee's death or Disability), the
Optionee may exercise his or her Option or SAR, but only within such period of
time as is determined by the Administrator at the time of grant, not to exceed
six (6) months (three (3) months in the case of an Incentive Stock Option) from
the date of such termination, and only to the extent that the Optionee was
entitled to exercise it at the date of such termination (but in no event later
than the expiration of the term of such Option or SAR as set forth in the Option
or SAR Agreement). To the extent that Optionee was not entitled to exercise an
Option or SAR at the date of such termination, and to the extent that the
Optionee does not exercise such Option or SAR (to the extent otherwise so
entitled) within the time specified herein, the Option or SAR shall terminate.

                           (iv) Disability of Optionee. In the event an
Optionee's Continuous Status as an Employee or Consultant terminates as a result
of the Optionee's Disability, the Optionee may exercise his or her Option or
SAR, but only within six (6) months from the date of such termination, and only
to the extent that the Optionee was entitled to exercise it at the date of such
termination (but in no event later than the expiration of the term of such
Option or SAR as set forth in the Option or SAR Agreement). To the extent that
Optionee was not entitled to exercise an Option or SAR at the date of such
termination, and to the extent that the Optionee does not exercise such Option
or SAR (to the extent otherwise so entitled) within the time specified herein,
the Option or SAR shall terminate.

                           (v) Death of Optionee. Notwithstanding Sections
5(c)(iii) and 5(c)(iv) above, in the event of an Optionee's death during
Optionee's Continuous Status as an Employee or Consultant, the Optionee's estate
or a person who acquired the right to exercise the deceased Optionee's Option or
SAR by bequest or inheritance may exercise the Option or SAR, but only within
six (6) months (or such lesser period as the Option or SAR Agreement may
provide, or such longer period, not to exceed twelve (12) months, as the Option
or SAR Agreement may provide) following the date of death, and only to the
extent that the Optionee was entitled to exercise it at the date of death (but
in no event later than the expiration of the full term of such Option or SAR as
set forth in the Option or SAR Agreement). To the extent that Optionee was not
entitled to exercise an Option or SAR at the date of death, and to the extent
that the Optionee's estate or a person who acquired the right to exercise such
Option does not exercise such Option or SAR (to the extent otherwise so
entitled) within the time specified herein, the Option or SAR shall terminate.


                                       -7-
<PAGE>   8
         7. Stock Purchase Rights.

                  (a) Rights to Purchase. Stock Purchase Rights may be issued
either alone, in addition to, or in tandem with other awards granted under the
Plan and/or cash awards made outside of the Plan. After the Administrator
determines that it will offer Stock Purchase Rights under the Plan, it shall
advise the offeree in writing of the terms, conditions and restrictions related
to the offer, including the number of Shares that the offeree shall be entitled
to purchase, the price to be paid, and the time within which the offeree must
accept such offer, which shall in no event exceed thirty (30) days from the date
upon which the Administrator made the determination to grant the Stock Purchase
Right. The offer shall be accepted by execution of a Restricted Stock Purchase
Agreement in the form determined by the Administrator.

                  (b) Repurchase Option. Unless the Administrator determines
otherwise, the Restricted Stock Purchase Agreement shall grant the Company a
repurchase option exercisable upon the voluntary or involuntary termination of
the purchaser's employment with the Company for any reason (including death or
Disability). The purchase price for Shares repurchased pursuant to the
Restricted Stock purchase agreement shall be the original price paid by the
purchaser and may be paid by cancellation of any indebtedness of the purchaser
to the Company. The repurchase option shall lapse at such rate as the
Administrator may determine.

                  (c) Other Provisions. The Restricted Stock Purchase Agreement
shall contain such other terms, provisions and conditions not inconsistent with
the Plan as may be determined by the Administrator in its sole discretion. In
addition, the provisions of Restricted Stock Purchase Agreements need not be the
same with respect to each purchaser.

                  (d) Rule 16b-3. Stock Purchase Rights granted to Insiders, and
Shares purchased by Insiders in connection with Stock Purchase Rights, shall be
subject to any restrictions applicable thereto in compliance with Rule 16b-3. An
Insider may only purchase Shares pursuant to the grant of a Stock Purchase
Right, and may only sell Shares purchased pursuant to the grant of a Stock
Purchase Right, during such time or times as are permitted by Rule 16b-3.

                  (e) Rights as a Stockholder. Once the Stock Purchase Right is
exercised, the purchaser shall have the rights equivalent to those of a
stockholder, and shall be a stockholder when his or her purchase is entered upon
the records of the duly authorized transfer agent of the Company. No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 10
of the Plan.

         8. Long-Term Performance Awards.

                  (a) Administration. Long-Term Performance Awards are cash or
stock bonus awards that may be granted either alone or in addition to other
awards granted under the Plan. Such awards shall be granted for no cash
consideration. The Administrator shall determine the nature, length and starting
date of any performance period (the "Performance Period") for each Long-Term
Performance Award, and shall determine the performance or employment factors, if
any, to be used in the determination of Long-Term Performance Awards and the
extent to which such Long-Term Performance Awards are valued or have been
earned. Long-Term Performance Awards may vary from participant to participant
and between groups of participants and shall be based upon the achievement of
Company, Subsidiary, Parent and/or individual performance factors or upon such
other criteria as the Administrator may deem appropriate. Performance Periods
may overlap and participants may participate simultaneously with respect to
Long-Term Performance Awards that are subject to different Performance Periods
and different performance factors and criteria. Long-Term Performance Awards
shall be confirmed by, and be subject to the terms of, a Long-Term Performance
Award agreement. The terms of such awards need not be the same with respect to
each participant.

                  At the beginning of each Performance Period, the Administrator
may determine for each Long-Term Performance Award subject to such Performance
Period the range of dollar values or number of shares of Common Stock to be
awarded to the participant at the end of the Performance Period if and to the
extent that the 


                                       -8-
<PAGE>   9
relevant measures of performance for such Long-Term Performance Award are met.
Such dollar values or number of shares of Common Stock may be fixed or may vary
in accordance with such performance or other criteria as may be determined by
the Administrator.

                  (b) Adjustment of Awards. The Administrator may adjust
the performance factors applicable to the Long-Term Performance Awards to take
into account changes in legal, accounting and tax rules and to make such
adjustments as the Administrator deems necessary or appropriate to reflect the
inclusion or exclusion of the impact of extraordinary or unusual items, events
or circumstances in order to avoid windfalls or hardships.

         9. Administration.

                  (a) Composition of Administrator.

                           (i) Multiple Administrative Bodies. If permitted by
Rule 16b-3 and Applicable Laws, the Plan may (but need not) be administered by
different administrative bodies with respect to (A) Directors who are employees,
(B) Officers who are not Directors and (C) Employees who are neither Directors
nor Officers.

                           (ii) Administration with respect to Directors and
Officers. With respect to grants of Options and Rights to eligible participants
who are Officers or Directors of the Company, the Plan shall be administered by
(A) the Board, if the Board may administer the Plan in compliance with Rule
16b-3 as it applies to a plan intended to qualify thereunder as a discretionary
grant or award plan, or (B) a Committee designated by the Board to administer
the Plan, which Committee shall be constituted (1) in such a manner as to permit
the Plan to comply with Rule 16b-3 as it applies to a plan intended to qualify
thereunder as a discretionary grant or award plan and (2) in such a manner as to
satisfy the Applicable Laws.

                           (iii) Administration with Respect to Other Persons.
With respect to grants of Options to eligible participants who are neither
Directors nor Officers of the Company, the Plan shall be administered by (A) the
Board or (B) a Committee designated by the Board, which Committee shall be
constituted in such a manner as to satisfy the Applicable Laws.

                           (iv) General. Once a Committee has been appointed
pursuant to subsection (ii) or (iii) of this Section 9(a), such Committee shall
continue to serve in its designated capacity until otherwise directed by the
Board. From time to time the Board may increase the size of any Committee and
appoint additional members thereof, remove members (with or without cause) and
appoint new members in substitution therefor, fill vacancies (however caused)
and remove all members of a Committee and thereafter directly administer the
Plan, all to the extent permitted by the Applicable Laws and, in the case of a
Committee appointed under subsection (ii), to the extent permitted by Rule 16b-3
as it applies to a plan intended to qualify thereunder as a discretionary grant
or award plan.

                  (b) Powers of the Administrator. Subject to the provisions of
the Plan, and in the case of a Committee, subject to the specific duties
delegated by the Board to such Committee, the Administrator shall have the
authority, in its discretion:

                           (i) to determine the Fair Market Value of the Common
Stock, in accordance with Section 2(n) of the Plan;

                           (ii) to select the Consultants and Employees to whom
Options and Rights may be granted hereunder;

                           (iii) to determine whether and to what extent Options
and Rights or any combination thereof, are granted hereunder;


                                       -9-
<PAGE>   10
                           (iv) to determine the number of shares of Common
Stock to be covered by each Option and Right granted hereunder;

                           (v) to approve forms of agreement for use under the
Plan;

                           (vi) to determine the terms and conditions, not
inconsistent with the terms of the Plan, of any award granted hereunder. Such
terms and conditions include, but are not limited to, the exercise price, the
time or times when Options or Rights may be exercised (which may be based on
performance criteria), any vesting acceleration or waiver of forfeiture
restrictions, and any restriction or limitation regarding any Option or Right or
the shares of Common Stock relating thereto, based in each case on such factors
as the Administrator, in its sole discretion, shall determine;

                           (vii) to construe and interpret the terms of the
Plan;

                           (viii) to prescribe, amend and rescind rules and
regulations relating to the Plan;

                           (ix) to determine whether and under what
circumstances an Option or Right may be settled in cash instead of Common Stock
or Common Stock instead of cash;

                           (x) to reduce the exercise price of any Option or
Right;

                           (xi) to modify or amend each Option or Right (subject
to Section 16 of the Plan);

                           (xii) to authorize any person to execute on behalf of
the Company any instrument required to effect the grant of an Option or Right
previously granted by the Administrator;

                           (xiii) to institute an Option Exchange Program;

                           (xiv) to determine the terms and restrictions
applicable to Options and Rights and any Restricted Stock; and

                           (xv) to make all other determinations deemed
necessary or advisable for administering the Plan.

                  (c) Effect of Administrator's Decision. The Administrator's
decisions, determinations and interpretations shall be final and binding on all
Optionees and any other holders of Options or Rights.

         10. Non-Transferability of Options. Options and Rights may not be sold,
pledged, assigned, hypothecated, transferred or disposed of in any manner other
than by will or by the laws of descent or distribution and may be exercised,
during the lifetime of the Optionee, only by the Optionee.

         11. Adjustments Upon Changes in Capitalization, Dissolution, Merger or
Asset Sale.

                  (a) Changes in Capitalization. Subject to any required action
by the stockholders of the Company, the number of shares of Common Stock covered
by each outstanding Option and Right, and the number of shares of Common Stock
which have been authorized for issuance under the Plan but as to which no
Options or Rights have yet been granted or which have been returned to the Plan
upon cancellation or expiration of an Option or Right, the maximum number of
Shares of Common Stock for which Options and Rights to any Employee under
Section 5 of the Plan as well as the price per share of Common Stock covered by
each such outstanding Option or Right, shall be proportionately adjusted for any
increase or decrease in the number of issued shares of Common Stock resulting
from a stock split, reverse stock split, stock dividend, combination or
reclassification of the Common Stock, or any other increase or decrease in the
number of issued shares of Common Stock effected without receipt of
consideration by the Company; provided, however, that conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of consideration." Such adjustment 


                                      -10-
<PAGE>   11
shall be made by the Board, whose determination in that respect shall be final,
binding and conclusive. Except as expressly provided herein, no issuance by the
Company of shares of stock of any class, or securities convertible into shares
of stock of any class, shall affect, and no adjustment by reason thereof shall
be made with respect to, the number or price of shares of Common Stock subject
to an Option or Right.

                  (b) Dissolution or Liquidation. In the event of the
proposed dissolution or liquidation of the Company, to the extent that an Option
or Right has not been previously exercised, it will terminate immediately prior
to the consummation of such proposed action. The Board may, in the exercise of
its sole discretion in such instances, declare that any Option or Right shall
terminate as of a date fixed by the Board and give each Optionee the right to
exercise his or her Option or Right as to all or any part of the Optioned Stock,
including Shares as to which the Option or Right would not otherwise be
exercisable.

                  (c) Merger or Asset Sale. In the event of a merger of the
Company with or into another corporation, or the sale of substantially all of
the assets of the Company, each outstanding Option and Right shall be assumed or
an equivalent Option or Right substituted by the successor corporation or a
Parent or Subsidiary of the successor corporation. In the event that the
successor corporation does not agree to assume the Option or to substitute an
equivalent option, the Administrator shall, in lieu of such assumption or
substitution, provide for the Optionee to have the right to exercise the Option
or Right as to all or a portion of the Optioned Stock, including Shares as to
which it would not otherwise be exercisable. If the Administrator makes an
Option or Right exercisable in lieu of assumption or substitution in the event
of a merger or sale of assets, the Administrator shall notify the Optionee that
the Option or Right shall be exercisable for a period of not less than fifteen
(15) days from the date of such notice, and the Option or Right will terminate
upon the expiration of such period. For the purposes of this paragraph, the
Option or Right shall be considered assumed if, immediately following the merger
or sale of assets, the Option or Right confers the right to purchase, for each
Share of Optioned Stock subject to the Option or Right immediately prior to the
merger or sale of assets, the consideration (whether stock, cash, or other
securities or property) received in the merger or sale of assets by holders of
Common Stock for each Share held on the effective date of the transaction (and
if holders were offered a choice of consideration, the type of consideration
chosen by the holders of a majority of the outstanding Shares); provided,
however, that if such consideration received in the merger or sale of assets was
not solely common stock of the successor corporation or its Parent, the
Administrator may, with the consent of the successor corporation and the
participant, provide for the consideration to be received upon the exercise of
the Option or Right, for each Share of Optioned Stock subject to the Option or
Right, to be solely common stock of the successor corporation or its Parent
equal in Fair Market Value to the per share consideration received by holders of
Common Stock in the merger or sale of assets.

         12. Date of Grant. The date of grant of an Option or Right shall be,
for all purposes, the date on which the Administrator makes the determination
granting such Option or Right, or such other later date as is determined by the
Administrator. Notice of the determination shall be provided to each Optionee
within a reasonable time after the date of such grant.

         13. Conditions Upon Issuance of Shares.

                  (a) Legal Compliance. Shares shall not be issued pursuant to
the exercise of an Option or Right unless the exercise of such Option or Right
and the issuance and delivery of such Shares shall comply with all relevant
provisions of law, including, without limitation, the Securities Act of 1933, as
amended, the Exchange Act, the rules and regulations promulgated thereunder,
Applicable Laws, and the requirements of any stock exchange or quotation system
upon which the Shares may then be listed or quoted, and shall be further subject
to the approval of counsel for the Company with respect to such compliance.

                  (b) Investment Representations. As a condition to the exercise
of an Option or Right, the Company may require the person exercising such Option
or Right to represent and warrant at the time of any such exercise that the
Shares are being purchased only for investment and without any present intention
to sell or distribute such Shares if, in the opinion of counsel for the Company,
such a representation is required.


                                      -11-
<PAGE>   12
         14. Liability of Company.

                  (a) Inability to Obtain Authority. The inability of the
Company to obtain authority from any regulatory body having jurisdiction, which
authority is deemed by the Company's counsel to be necessary to the lawful
issuance and sale of any Shares hereunder, shall relieve the Company of any
liability in respect of the failure to issue or sell such Shares as to which
such requisite authority shall not have been obtained.

                  (b) Grants Exceeding Allotted Shares. If the Optioned Stock
covered by an Option or Right exceeds, as of the date of grant, the number of
Shares which may be issued under the Plan without additional stockholder
approval, such Option or Right shall be void with respect to such excess
Optioned Stock, unless stockholder approval of an amendment sufficiently
increasing the number of Shares subject to the Plan is timely obtained in
accordance with Section 16(b) of the Plan.

         15. Reservation of Shares. The Company, during the term of this Plan,
will at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

         16. Stockholder Approval. Continuance of the Plan shall be subject to
approval by the stockholders of the Company within twelve (12) months before or
after the date the Plan is adopted. Such stockholder approval shall be obtained
in the manner and to the degree required under applicable federal and state law.

         17. Amendment and Termination of the Plan.

                  (a) Amendment and Termination. The Board may at any time
amend, alter, suspend or terminate the Plan.

                  (b) Stockholder Approval. The Company shall obtain stockholder
approval of any Plan amendment to the extent necessary and desirable to comply
with Rule 16b-3 or with Section 162(m) or 422 of the Code (or any successor rule
or statute or other applicable law, rule or regulation, including the
requirements of any exchange or quotation system on which the Common Stock is
listed or quoted). Such stockholder approval, if required, shall be obtained in
such a manner and to such a degree as is required by the applicable law, rule or
regulation.

                  (c) Effect of Amendment or Termination. No amendment,
alteration, suspension or termination of the Plan shall impair the rights of any
Optionee, unless mutually agreed otherwise between the Optionee and the
Administrator, which agreement must be in writing and signed by the Optionee and
the Company.

         18. Taxation Upon Exercise of Option or Right. At the discretion of the
Administrator, Optionees may satisfy withholding obligations as provided in this
Section 18. When an Optionee incurs tax liability in connection with an Option
or Right, which tax liability is subject to withholding under applicable tax
laws, the Optionee may satisfy the tax withholding obligation by one or some
combination of the following methods: (a) by cash payment, or (b) out of
Optionee's current compensation, or (c) by surrendering to the Company Shares
which (i) in the case of Shares previously acquired from the Company, have been
owned by the Optionee for more than six months on the date of surrender, and
(ii) have a fair market value on the date of surrender equal to or less than
Optionee's marginal tax rate times the ordinary income recognized, or (d) by
electing to have the Company withhold from the Shares to be issued upon exercise
of the Option or Right that number of Shares having a fair market value equal to
the amount required to be withheld. For this purpose, the fair market value of
the Shares to be withheld shall be determined on the date that the amount of tax
to be withheld is to be determined (the "Tax Date").

         If the Optionee is an Insider, any surrender of previously owned Shares
to satisfy tax withholding obligations arising upon exercise of this Option must
comply with the applicable provisions of Rule 16b-3 and shall be subject to such
additional conditions or restrictions as may be required thereunder to qualify
for the maximum exemption from Section 16 of the Exchange Act with respect to
Plan transactions.


                                      -12-
<PAGE>   13
         All elections by an Optionee to have Shares withheld to satisfy tax
withholding obligations shall be made in writing in a form acceptable to the
Administrator and shall be subject to the following restrictions:

                  (a) the election must be made on or prior to the applicable
Tax Date;

                  (b) once made, the election shall be irrevocable as to the
particular Shares of the Option as to which the election is made;

                  (c) all elections shall be subject to the consent or
disapproval of the Administrator;

                  (d) if the Optionee is an Insider, the election must comply
with the applicable provisions of Rule 16b-3 and shall be subject to such
additional conditions or restrictions as may be required thereunder to qualify
for the maximum exemption from Section 16 of the Exchange Act with respect to
Plan transactions.

         In the event the election to have Shares withheld is made by an
Optionee and the Tax Date is deferred under Section 83 of the Code because no
election is filed under Section 83(b) of the Code, the Optionee shall receive
the full number of Shares with respect to which the Option is exercised but such
Optionee shall be unconditionally obligated to tender back to the Company the
proper number of Shares on the Tax Date.

         19. Term of the Plan. The Plan shall expire, and no further Options
shall be granted pursuant to the Plan, on December 31, 2002.


                                      -13-

<PAGE>   1
                                                                    EXHIBIT 4.2


                          CATALYST SEMICONDUCTOR, INC.

                         1993 DIRECTOR STOCK OPTION PLAN

                     AS AMENDED AND RESTATED ON MAY 30, 1996

         1. Purpose of the Plan. The purpose of this 1993 Director Stock Option
Plan is to attract and retain highly qualified personnel to serve as Outside
Directors of the Company.

                  All options granted hereunder shall be "non-statutory stock
options."

         2. Definitions. As used herein, the following definitions shall apply:

                  (a) "Board" means the Board of Directors of the Company.

                  (b) "Code" means the Internal Revenue Code of 1986, as
amended.

                  (c) "Common Stock" means the Common Stock of the Company.

                  (d) "Company" means Catalyst Semiconductor, Inc., a Delaware
corporation, and its predecessor corporation Catalyst Semiconductor, Inc., a
California corporation.

                  (e) "Continuous Status as a Director" means the absence of any
interruption or termination of service as a Director.

                  (f) "Director" means a member of the Board.

                  (g) "Employee" means any person, including officers and
Directors, employed by the Company or any Parent or Subsidiary of the Company.
The payment of a Director's fee by the Company shall not be sufficient in and of
itself to constitute "employment" by the Company.

                  (h) "Exchange Act" means the Securities Exchange Act of 1934,
as amended.

                  (i) "Fair Market Value" means, as of any date, the value of
Common Stock determined as follows:

                           (i) If the Common Stock is listed on any established
stock exchange or a national market system, including without limitation the
National Market System of the National Association of Securities Dealers, Inc.
Automated Quotation ("NASDAQ") System, the Fair Market Value of a Share of
Common Stock shall be the closing sales price for such stock (or the closing
bid, if no sales were reported) as quoted on such system or exchange (or the
exchange with the greatest volume of trading in Common Stock) on the date of
determination, or, if not a market trading day, on the last market trading day
prior to the date of determination, as reported in The Wall Street Journal or
such other source as the Board deems reliable;

                           (ii) If the Common Stock is quoted on the NASDAQ
System (but not on the National Market System thereof) or regularly quoted by a
recognized securities dealer but selling prices are not reported, the Fair
Market Value of a Share of Common Stock shall be the mean between the high bid
and low asked prices for the Common Stock on the date of determination, as
reported in The Wall Street Journal or such other source as the Board deems
reliable; or

                           (iii) In the absence of an established market for the
Common Stock, the Fair Market Value thereof shall be determined in good faith by
the Board.
<PAGE>   2
                  (j) "Option" means a stock option granted pursuant to the
Plan.

                  (k) "Optioned Stock" means the Common Stock subject to an
Option.

                  (l) "Optionee" means an Outside Director who receives an
Option.

                  (m) "Outside Director" means a Director who is not an
Employee.

                  (n) "Parent" means a "parent corporation," whether now or
hereafter existing, as defined in Section 424(e) of the Code.

                  (o) "Plan" means this 1993 Director Stock Option Plan.

                  (p) "Share" means a share of the Common Stock, as adjusted in
accordance with Section 10 of the Plan.

                  (q) "Subsidiary" means a "subsidiary corporation," whether now
or hereafter existing, as defined in Section 424(f) of the Code.

         3. Stock Subject to the Plan. Subject to the provisions of Section 10
of the Plan, the maximum aggregate number of Shares which may be optioned and
sold under the Plan is 220,000 Shares (the "Pool") of Common Stock (which number
gives effect to a one-for-nine reverse stock split of the Shares approved by the
Board on March ___, 1993 ("Post-Split")). The Shares may be authorized but
unissued, or reacquired Common Stock.

                  If an Option should expire or become unexercisable for any
reason without having been exercised in full, the unpurchased Shares which were
subject thereto shall, unless the Plan shall have been terminated, become
available for future grant under the Plan.

         4. Administration of and Grants of Options under the Plan.

                  (a) Administrator. Except as otherwise required herein, the
Plan shall be administered by the Board.

                  (b) Procedure for Grants. The provisions set forth in this
Section 4(b) shall not be amended more than once every six months, other than to
comply with changes in the Code, the Employee Retirement Income Security Act of
1974, as amended, or the rules thereunder. All grants of Options hereunder shall
be automatic and non-discretionary and shall be made strictly in accordance with
the following provisions:

                           (i) No person shall have any discretion to select
which Outside Directors shall be granted Options or to determine the number of
Shares to be covered by Options granted to Outside Directors.

                           (ii) Each new Outside Director who shall first join
the Board on or after March 1, 1993 (including any new Outside Director who
shall have first joined the Board of Catalyst Semiconductor, Inc., a California
corporation, subsequent to March 1, 1993), shall automatically be granted an
Option to purchase 20,000 Post-Split Shares upon the date on which such person
first becomes an Outside Director, whether through election by the stockholders
of the Company, appointment by the Board to fill a vacancy, or termination of
employment by the Company while remaining as a Director (a "One-Time Grant"). In
addition, on April 1, 1994, and on each April 1 thereafter during the term of
this Plan, each Outside Director who shall have been an Outside Director for at
least six (6) months as of such date shall automatically receive an Option to
purchase 7,500 Post-Split Shares (an "Annual Grant").

                           (iii) The terms of each Option granted hereunder
shall be as follows:
<PAGE>   3
                                    (A) the term of the Option shall be five (5)
years;

                                    (B) the Option shall be exercisable only
while the Outside Director remains a Director of the Company, except as set
forth in Section 8 hereof;

                                    (C) the exercise price per Share shall be
100% of the Fair Market Value per Share on the date of grant of the Option;

                                    (D) each Annual Grant and One-Time Grant
shall become exercisable in installments cumulatively as to one-third of the
Optioned Stock on each anniversary of the date of grant, so that 100% of the
Optioned Stock granted under any such grant shall be exercisable in full three
(3) years after the date of grant of the Option, assuming in each case
Continuous Status as a Director.

                           (iv) In the event that any Option granted under the
Plan would cause the number of Shares subject to outstanding Options plus the
number of Shares previously purchased upon exercise of Options to exceed the
Pool, then each such automatic grant shall be for that number of Shares
determined by dividing the total number of Shares remaining available for grant
by the number of Outside Directors entitled to receive Options on the grant
date. No further grants shall be made until such time, if any, as additional
Shares become available for grant under the Plan through action of the
shareholders to increase the number of Shares which may be issued under the Plan
or through cancellation or expiration of Options previously granted hereunder.

                  (c) Powers of the Board. Subject to the provisions and
restrictions of the Plan, the Board shall have the authority, in its discretion:
(i) to determine, upon review of relevant information and in accordance with
Section 2(i) of the Plan, the Fair Market Value of the Common Stock; (ii) to
interpret the Plan; (iii) to prescribe, amend and rescind rules and regulations
relating to the Plan; (iv) to authorize any person to execute on behalf of the
Company any instrument required to effectuate the grant of an Option previously
granted hereunder; and (v) to make all other determinations deemed necessary or
advisable for the administration of the Plan.

                  (d) Effect of Board's Decision. All decisions, determinations
and interpretations of the Board shall be final.

         5. Eligibility. Options may be granted only to Outside Directors. All
Options shall be automatically granted in accordance with the terms set forth in
Section 4(b) hereof. An Outside Director who has been granted an Option may, if
he or she is otherwise eligible, be granted an additional Option or Options in
accordance with such provisions.

            The Plan shall not confer upon any Optionee any right with
respect to continuation of service as a Director or nomination to serve as a
Director, nor shall it interfere in any way with any rights which the Director
or the Company may have to terminate his or her directorship at any time.

         6. Term of Plan. The Plan shall become effective upon the earlier to
occur of its adoption by the Board or its approval by the stockholders of the
Company as described in Section 16 of the Plan. It shall continue in effect
until April 30, 2003, unless sooner terminated under Section 11 of the Plan.

         7. Consideration. The consideration to be paid for the Shares to be
issued upon exercise of an Option, including the method of payment, shall be
determined by the Board and may consist entirely of (i) cash, (ii) check, (iii)
promissory note, (iv) other shares which have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the Shares as to which said
Option shall be exercised and which, in the case of Shares acquired upon
exercise of an option, have been owned by the Optionee for more than 12 months
on the date of surrender, (v) delivery of a properly executed exercise notice
together with irrevocable instructions to a broker to promptly deliver to the
Company the amount of sale or loan proceeds required to pay the exercise price,
(vi) delivery of an irrevocable subscription agreement for the Shares which
irrevocably obligates the Optionee to take and pay for the Shares not more than
12 months after the date of delivery of the subscription agreement, 
<PAGE>   4
(vii) any combination of the foregoing methods of payment, or (viii) such other
consideration and method of payment for the issuance of Shares to the extent
permitted under applicable law.

         8. Exercise of Option.

                  (a) Procedure for Exercise; Rights as a Stockholder. Any
Option granted hereunder shall be exercisable at such times as are set forth in
Section 4(b) hereof; provided, however, that no Options shall be exercisable
until stockholder approval of the Plan in accordance with Section 16 hereof has
been obtained.

                  An Option may not be exercised for a fraction of a Share.

                  An Option shall be deemed to be exercised when written notice
of such exercise has been given to the Company in accordance with the terms of
the Option by the person entitled to exercise the Option and full payment for
the Shares with respect to which the Option is exercised has been received by
the Company. Full payment may consist of any consideration and method of payment
allowable under Section 7 of the Plan. Until the issuance (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the stock certificate evidencing such Shares, no right
to vote or receive dividends or any other rights as a stockholder shall exist
with respect to the Optioned Stock, notwithstanding the exercise of the Option.
A share certificate for the number of Shares so acquired shall be issued to the
Optionee as soon as practicable after exercise of the Option. No adjustment will
be made for a dividend or other right for which the record date is prior to the
date the stock certificate is issued, except as provided in Section 10 of the
Plan.

                  Exercise of an Option in any manner shall result in a decrease
in the number of Shares which thereafter may be available, both for purposes of
the Plan and for sale under the Option, by the number of Shares as to which the
Option is exercised.

                  (b) Termination of Continuous Status as a Director. In the
event an Optionee's Continuous Status as a Director terminates (other than upon
the Optionee's death or total and permanent disability (as defined in Section
22(e)(3) of the Code)), the Optionee may exercise his or her Option, but only
within 90 days from the date of such termination, and only to the extent that
the Optionee was entitled to exercise it at the date of such termination (but in
no event later than the expiration of its five-year term). To the extent that
the Optionee was not entitled to exercise an Option at the date of such
termination, and to the extent that the Optionee does not exercise such Option
(to the extent otherwise so entitled) within the time specified herein, the
Option shall terminate.

                  (c) Disability of Optionee. In the event Optionee's Continuous
Status as a Director terminates as a result of total and permanent disability
(as defined in Section 22(e)(3) of the Code), the Optionee may exercise his or
her Option, but only within six months from the date of such termination, and
only to the extent that the Optionee was entitled to exercise it at the date of
such termination (but in no event later than the expiration of its five-year
term). To the extent that the Optionee was not entitled to exercise an Option at
the date of termination, or if he or she does not exercise such Option (to the
extent otherwise so entitled) within the time specified herein, the Option shall
terminate.

                  (d) Death of Optionee. In the event of an Optionee's death
while a Director, the Optionee's estate or a person who acquired the right to
exercise the Option by bequest or inheritance may exercise the Option, but only
within one year following the date of death, and only to the extent that the
Optionee was entitled to exercise it at the date of death (but in no event later
than the expiration of its five-year term). To the extent that the Optionee was
not entitled to exercise an Option at the date of death, and to the extent that
the Optionee's estate or a person who acquired the right to exercise such Option
does not exercise such Option (to the extent otherwise so entitled) within the
time specified herein, the Option shall terminate.

         9. Non-Transferability of Options. The Option may not be sold, pledged,
assigned, hypothecated, transferred or disposed of in any manner other than by
will, by the laws of descent or distribution or pursuant to a qualified domestic
relations order, and may be exercised, during the lifetime of the Optionee, only
by the Optionee or a permitted transferee.
<PAGE>   5
         10. Adjustments.

                  (a) Changes in Capitalization. In the event that the stock of
the Company is changed by reason of any stock split, reverse stock split,
recapitalization, or other change in the capital structure of the Company, or
converted into or exchanged for other securities as a result of any merger,
consolidation or reorganization, or in the event that the outstanding number of
shares of stock of the Company is increased through payment of a stock dividend,
appropriate proportionate adjustments shall be made in the number and class of
shares of stock subject to the Plan, the number and class of shares subject to
any Option outstanding under the Plan, and the exercise price of any such
outstanding Option; provided, however, that the Company shall not be required to
issue fractional shares as a result of any such adjustment. Any such adjustment
shall be made upon approval by the Board, whose determination shall be
conclusive. If there is any other change in the number or type of the
outstanding shares of stock of the Company, or of any other security into which
such stock shall have been changed or for which it shall have been exchanged,
and if the Board in its sole discretion determines that such change equitably
requires an adjustment in the Options then outstanding under the Plan, such
adjustment shall be made in accordance with the determination of the Board. No
adjustments shall be required by reason of the issuance or sale by the Company
for cash or other consideration of additional shares of its stock or securities
convertible into or exchangeable for shares of its stock.

                  (b) Change in Control. In the event of a "Change in Control"
of the Company, as defined in paragraph (c) below, then the following provisions
shall apply:

                           (i) Any Option outstanding on the date of such Change
in Control ("Outstanding Option") that is not yet exercisable and vested on such
date shall become fully exercisable and vested;

                           (ii) Each Outstanding Option shall be assumed by the
successor corporation (if any) or by a Parent or Subsidiary of the successor
corporation (if any);

                           (iii) Each Outstanding Option shall remain
exercisable by the Optionee for a period of at least ninety (90) days from the
date of the Change in Control; and

                           (iv) Each Optionee with an Outstanding Option shall
be provided with written notice of the period of exercisability provided for in
subsection (b)(iii) above promptly after the date of the Change in Control by
the Company or by the entity surviving after the Change in Control.

                  (c) Definition of "Change in Control". For purposes of this
Section 10, a "Change in Control" means the happening of any of the following:

                           (i) when any "person," as such term is used in
Sections 13(d) and 14(d) of the Exchange Act (other than the Company, a
Subsidiary or a Company employee benefit plan, including any trustee of such
plan acting as trustee), is or becomes the "beneficial owner" (as defined in
Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the
Company representing more than fifty (50%) of the combined voting power of the
Company's then outstanding securities entitled to vote generally in the election
of directors; or

                           (ii) a merger or consolidation of the Company with
any other corporation, other than a merger or consolidation which would result
in the voting securities of the Company outstanding immediately prior thereto
continuing to represent (either by remaining outstanding or by being converted
into voting securities of the surviving entity) at least fifty percent (50%) of
the total voting power represented by the voting securities of the Company or
such surviving entity outstanding immediately after such merger or
consolidation; or

                           (iii) the stockholders of the Company approve an
agreement for the sale or disposition by the Company of all or substantially all
the Company's assets; or
<PAGE>   6
                           (iv) a change in the composition of the Board
occurring as a result of any one meeting of the stockholders of the Company, as
a result of which fewer than a majority of the directors are Incumbent
Directors. "Incumbent Directors" shall mean directors who either are (A)
directors of the Company as of the date the Plan is approved by the
stockholders, or (B) elected, or nominated for election, to the Board of
Directors of the Company with the affirmative votes of at least a majority of
the Incumbent Directors at the time of such election or nomination (but shall
not include an individual whose election or nomination is in connection with an
actual or threatened proxy contest relating to the election of directors to the
Company).

         11. Amendment and Termination of the Plan.

                  (a) Amendment and Termination. The Board may at any time
amend, alter, suspend or discontinue the Plan, but no amendment, alteration,
suspension or discontinuation shall be made which would impair the rights of any
Optionee under any grant theretofore made, without his or her consent. In
addition, to the extent necessary and desirable to comply with Rule 16b-3 under
the Exchange Act (or any other applicable law or regulation), the Company shall
obtain stockholder approval of any Plan amendment in such a manner and to such a
degree as required.

                  (b) Effect of Amendment or Termination. Any such amendment or
termination of the Plan shall not affect Options already granted and such
Options shall remain in full force and effect as if this Plan had not been
amended or terminated.

         12. Time of Granting Options. The date of grant of an Option shall, for
all purposes, be the date determined in accordance with Section 4(b) hereof.
Notice of the determination shall be given to each Outside Director to whom an
Option is so granted within a reasonable time after the date of such grant.

         13. Conditions Upon Issuance of Shares. Shares shall not be issued
pursuant to the exercise of an Option unless the exercise of such Option and the
issuance and delivery of such Shares pursuant thereto shall comply with all
relevant provisions of law, including, without limitation, the Securities Act of
1933, as amended, the Exchange Act, the rules and regulations promulgated
thereunder, state securities laws and the requirements of any stock exchange or
market system upon which the Shares may then be listed, and shall be further
subject to the approval of counsel for the Company with respect to such
compliance.

                  As a condition to the exercise of an Option, the Company may
require the person exercising such Option to represent and warrant at the time
of any such exercise that the Shares are being purchased only for investment and
without any present intention to sell or distribute such Shares, if, in the
opinion of counsel for the Company, such a representation is required by any of
the aforementioned relevant provisions of law.

                  Inability of the Company to obtain authority from any
regulatory body having jurisdiction, which authority is deemed by the Company's
counsel to be necessary to the lawful issuance and sale of any Shares hereunder,
shall relieve the Company of any liability in respect of the failure to issue or
sell such Shares as to which such requisite authority shall not have been
obtained.

         14. Reservation of Shares. The Company, during the term of this Plan,
will at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

         15. Option Agreement. Options shall be evidenced by written option
agreements in such form as the Board shall approve.

         16. Stockholder Approval. Continuance of the Plan shall be subject to
approval by the stockholders of the Company at or prior to the first annual
meeting of stockholders held subsequent to the first granting of an Option
hereunder. Such stockholder approval shall be obtained in the degree and manner
required under applicable state and federal law.

<PAGE>   1
                                                                    EXHIBIT 5.1


                                  [Letterhead]

                                        
                                 August 12, 1996


Catalyst Semiconductor, Inc.
1250 Borregas Avenue
Sunnyvale, CA  94089

         REGISTRATION STATEMENT ON FORM S-8

Ladies and Gentlemen:

         We have examined the Registration Statement on Form S-8 (the
"Registration Statement") filed by you with the Securities and Exchange
Commission (the "Commission") on August 12, 1996 in connection with the
registration under the Securities Act of 1933, as amended, of a total of
1,580,000 shares of your Common Stock (the "Shares") reserved for issuance under
the Catalyst Semiconductor, Inc. Stock Option Plan as amended and restated on
May 30, 1996 and the Catalyst Semiconductor, Inc. 1993 Director Stock Option
Plan as amended and restated on May 30, 1996. As your counsel in connection with
this transaction, we have examined the proceedings taken and are familiar with
the proceedings proposed to be taken by you in connection with the sale and
issuance of the Shares.

         It is our opinion that upon conclusion of the proceedings being taken
or contemplated by us, as your counsel, to be taken prior to the issuance of the
Shares, and upon completion of the proceedings being taken in order to permit
such transactions to be carried out in accordance with the securities laws of
the various states where required, the Shares when issued and sold in the manner
described in the Registration Statement will be legally and validly issued,
fully paid and non-assessable.

         We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name wherever appearing in the
Registration Statement, including the Prospectus constituting a part thereof,
and in any amendment thereto.

                                    Very truly yours,

                                    VENTURE LAW GROUP
                                    A Professional Corporation




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