UNITRODE CORP
SC 13G, 1998-08-14
SEMICONDUCTORS & RELATED DEVICES
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                              UNITED STATES
                    SECURITIES AND EXCHANGE COMMISSION
                         Washington, D.C. 20549

                              SCHEDULE 13G

               Under the Securities Exchange Act of 1934
                           (Amendment No. )

                         Unitrode Corporation
                           (Name of Issuer)

                              Common Stock
                    (Title of Class of Securities)

                                913283107
                              (CUSIP Number)

                              August 4, 1998
          (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which
this Schedule is filed:
                         /___/     Rule 13d-1(b)
                         /_X_/     Rule 13d-1(c)
                         /___/     Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a
reporting person's initial filing on this form with respect to
the subject class of securities, and for any subsequent amendment
containing information which would alter disclosures provided in
a prior cover page.

The information required on the remainder of this cover page
shall not be deemed to be "filed" for the purpose of Section 18
of the Securities Exchange Act of 1934 ("Act") or otherwise
subject to the liabilities of that section of the Act but shall
be subject to all other provisions of the Act (however, see the
Notes).

Potential persons who are to respond to the collection of
information contained in this form are not required to respond
unless the form displays a currently valid OMB control number.

SEC 1745 (3-98)               Page 1 of 12
<PAGE>
<PAGE>
CUSIP No. 913283107

- ----------------------------------------------------------------
1    NAME OF REPORTING PERSONS
     IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     West Highland Capital, Inc.
- ----------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See
Instructions)
     (a)/X /
     (b)/  /
- ----------------------------------------------------------------
3    SEC USE ONLY

- ----------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION

     California
- ----------------------------------------------------------------
       NUMBER OF         5    SOLE VOTING POWER
        SHARES                0
     BENEFICIALLY        ---------------------------------------
       OWNED BY          6    SHARED VOTING POWER
         EACH                 0
      REPORTING          ---------------------------------------
        PERSON           7    SOLE DISPOSITIVE POWER
         WITH                 0
                         ---------------------------------------
                         8    SHARED DISPOSITIVE POWER
                              0
- ----------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     0
- ----------------------------------------------------------------
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
     SHARES (See Instructions)

- ----------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     0%
- ----------------------------------------------------------------
12   TYPE OF REPORTING PERSON (See Instructions)
     CO and IA
- ----------------------------------------------------------------
                         Page 2 of 12
<PAGE>
<PAGE>
CUSIP No. 913283107

- ----------------------------------------------------------------
1    NAME OF REPORTING PERSONS
     IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Estero Partners, LLC
- ----------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See
Instructions)
     (a)/X /
     (b)/  /
- ----------------------------------------------------------------
3    SEC USE ONLY

- ----------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION

     California
- ----------------------------------------------------------------
       NUMBER OF         5    SOLE VOTING POWER
        SHARES                0
     BENEFICIALLY        ---------------------------------------
       OWNED BY          6    SHARED VOTING POWER
         EACH                 0
      REPORTING          ---------------------------------------
        PERSON           7    SOLE DISPOSITIVE POWER
         WITH                 0
                         ---------------------------------------
                         8    SHARED DISPOSITIVE POWER
                              0
- ----------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     0
- ----------------------------------------------------------------
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
     SHARES (See Instructions)

- ----------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     0%
- ----------------------------------------------------------------
12   TYPE OF REPORTING PERSON (See Instructions)
     OO
- ----------------------------------------------------------------
                         Page 3 of 12
<PAGE>
<PAGE>
CUSIP No. 913283107

- ----------------------------------------------------------------
1    NAME OF REPORTING PERSONS
     IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Lang H. Gerhard
- ----------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See
Instructions)
     (a)/X /
     (b)/  /
- ----------------------------------------------------------------
3    SEC USE ONLY

- ----------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION

     United States  
- ----------------------------------------------------------------
       NUMBER OF         5    SOLE VOTING POWER
        SHARES                0
     BENEFICIALLY        ---------------------------------------
       OWNED BY          6    SHARED VOTING POWER
         EACH                 0
      REPORTING          ---------------------------------------
        PERSON           7    SOLE DISPOSITIVE POWER
         WITH                 0
                         ---------------------------------------
                         8    SHARED DISPOSITIVE POWER
                              0
- ----------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     0
- ----------------------------------------------------------------
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
     SHARES (See Instructions)

- ----------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     0%
- ----------------------------------------------------------------
12   TYPE OF REPORTING PERSON (See Instructions)
     IN
- ----------------------------------------------------------------
                         Page 4 of 12
<PAGE>
<PAGE>
CUSIP No. 913283107

- ----------------------------------------------------------------
1    NAME OF REPORTING PERSONS
     IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     West Highland Partners, L.P.
- ----------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See
Instructions)
     (a)/X /
     (b)/  /
- ----------------------------------------------------------------
3    SEC USE ONLY

- ----------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION

     California
- ----------------------------------------------------------------
       NUMBER OF         5    SOLE VOTING POWER
        SHARES                0
     BENEFICIALLY        ---------------------------------------
       OWNED BY          6    SHARED VOTING POWER
         EACH                 0
      REPORTING          ---------------------------------------
        PERSON           7    SOLE DISPOSITIVE POWER
         WITH                 0
                         ---------------------------------------
                         8    SHARED DISPOSITIVE POWER
                              0
- ----------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     0
- ----------------------------------------------------------------
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
     SHARES (See Instructions)

- ----------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     0%
- ----------------------------------------------------------------
12   TYPE OF REPORTING PERSON (See Instructions)
     PN
- ----------------------------------------------------------------
                         Page 5 of 12
<PAGE>
<PAGE>
CUSIP No. 913283107

- ----------------------------------------------------------------
1    NAME OF REPORTING PERSONS
     IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

     Buttonwood Partners, L.P.
- ----------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See
Instructions)
     (a)/X /
     (b)/  /
- ----------------------------------------------------------------
3    SEC USE ONLY

- ----------------------------------------------------------------
4    CITIZENSHIP OR PLACE OF ORGANIZATION

     California
- ----------------------------------------------------------------
       NUMBER OF         5    SOLE VOTING POWER
        SHARES                0
     BENEFICIALLY        ---------------------------------------
       OWNED BY          6    SHARED VOTING POWER
         EACH                 0
      REPORTING          ---------------------------------------
        PERSON           7    SOLE DISPOSITIVE POWER
         WITH                 0
                         ---------------------------------------
                         8    SHARED DISPOSITIVE POWER
                              0
- ----------------------------------------------------------------
9    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     0
- ----------------------------------------------------------------
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
     SHARES (See Instructions)

- ----------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
     0%
- ----------------------------------------------------------------
12   TYPE OF REPORTING PERSON (See Instructions)
     PN
- ----------------------------------------------------------------
                         Page 6 of 12
<PAGE>
<PAGE>
CUSIP No. 913283107                13G       

ITEM 1.

     (a)  The name of the issuer is Unitrode Corporation ("UTR"). 
On August 4, 1998, UTR merged with Benchmarq Microelectronics
Inc. ("BMRQ") and each share of BMRQ's Common Stock was exchanged
for one share of UTR's Common Stock.  The persons filing this
statement previously filed a statement on Schedule 13G to report
beneficial ownership of more than five percent of BMRQ's Common
Stock.  This statement is being filed to report beneficial
ownership of less than five percent of UTR's Common Stock.

     (b)  The principal executive office of UTR is located at 7
Continental Boulevard, Merrimack, NH  03054.


ITEM 2.

     (a)  The names of the persons filing this statement are West
Highland Capital, Inc. ("WHC"), Lang H. Gerhard ("Gerhard"),
Estero Partners, LLC ("LLC"), West Highland Partners, L.P.
("WHP") and Buttonwood Partners, L.P. ("BP") (collectively, the
"Filers").

     (b)  The principal business office of the Filers is located
at 300 Drake's Landing Road, Suite 290, Greenbrae, CA 94904.

     (c)  WHC is a California corporation, LLC is a California
limited liability company, WHP and BP are California limited
partnerships and Gerhard is a United States citizen.

     (d)  This statement relates to shares of Common Stock of UTR
(the "Stock").

     (e)  The CUSIP number of the Stock is 913283107.

                         Page 7 of 12
<PAGE>
<PAGE>

CUSIP No. 913283107                13G       

ITEM 3.  If this statement is filed pursuant to rule 240.13d-
1(b), or 240.13d-2(b) or (c), check whether the person filing is
a:

     (a)  ___  Broker or dealer registered under section 15 of
the Act (15 U.S.C. 78o).

     (b)  ___  Bank as defined in section 3(a)(6) of the Act (15
U.S.C. 78c).

     (c)  ___  Insurance company as defined in section 3(a)(19)
of the Act (15 U.S.C. 78c).

     (d)  ___  Investment company registered under section 8 of
the Investment Company Act of 1940 (15 U.S.C. 80a-8).

     (e)  ___  An investment adviser in accordance with 240.13d-
1(b)(1)(ii)(E).

     (f)  ___  An employee benefit plan or endowment fund in
accordance with 240.13d-1(b)(1)(ii)(F).

     (g)  ___  A parent holding company or control person in
accordance with 240.13d-1(b)(1)(ii)(G)

     (h)  ___  A savings association as defined in section 3(b)
of the Federal Deposit Insurance Act (12 U.S.C. 1813).

     (i)  ___  A church plan that is excluded from the definition
of an investment company under section 3(c)(14) of the Investment
Company Act of 1940 (15 U.S.C. 80a-3).

     (j)  ___  Group, in accordance with section 240.13d-
1(b)(1)(ii)(J)


                         Page 8 of 12
<PAGE>
<PAGE>

CUSIP No. 913283107                13G       

ITEM 4.  OWNERSHIP.

The beneficial persons named in Item 2 of this statement do not
own any of the Stock at the date hereof.


                         Page 9 of 12
<PAGE>
<PAGE>

CUSIP No. 913283107                13G       


ITEM 5.  OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

If this statement is being filed to report the fact that as of
the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following /XX/.


ITEM. 6.  OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF
ANOTHER PERSON

Not applicable.


                         Page 10 of 12
<PAGE>
<PAGE>

CUSIP No. 913283107                13G       


ITEM 7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY
WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
HOLDING COMPANY

Not applicable.

ITEM 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE
GROUP

Not applicable.  

ITEM 9.  NOTICE OF DISSOLUTION OF GROUP

Not applicable.

ITEM 10.  CERTIFICATION

By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and
are not held for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and were
not acquired and are not held in connection with or as a
participant in any transaction having that purpose or effect.

SIGNATURES

     After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this
statement is true, complete and correct.

DATED:    August 14, 1998

LANG H. GERHARD                         WEST HIGHLAND PARTNERS,
                                        L.P.
By:  West Highland Capital, Inc.        By:  West Highland
     Attorney-in-Fact                        Capital, Inc.
                                             Attorney-in-Fact
     By: /s/ Bonnie George                   By:/s/Bonnie George 
          Bonnie George                           Bonnie George,
          Chief Operating Officer                 Chief Operating
                                                  Officer
WEST HIGHLAND CAPITAL, INC.             BUTTONWOOD PARTNERS
By:    /s/ Bonnie George                By:  West Highland
     Bonnie George                           Capital, Inc.
     Chief Operating Officer                 Attorney-in-Fact
     
ESTERO PARTNER, LLC                          By:/s/Bonnie George
By:  West Highland Capital, Inc.                  Bonnie George
     Attorney-in-Fact                             Chief Operating
     By:  /s/ Bonnie George                       Officer
          Bonnie George
          Chief Operating Officer
                              Page 11 of 12
CUSIP No. 913283107
SCHEDULE 13G

EXHIBIT A

               AGREEMENT REGARDING JOINT FILING
               OF STATEMENT ON SCHEDULE 13D OR 13G

The undersigned agree to file jointly with the Securities and
Exchange Commission (the "SEC") any and all statements on
Schedule 13D or Schedule 13G (and any amendments or supplements
thereto) required under section 13(d) of the Securities Exchange
Act of 1934, as amended, in connection with purchases by the
undersigned of securities of Intermedia Communications, Inc. and
any other issuer, until such time as the undersigned file with
the SEC a statement terminating this Agreement Regarding Joint
Filing of Statement on Schedule 13D or 13G.  For that purpose,
the undersigned hereby constitute and appoint West Highland
Capital, Inc., a California corporation, as their true and lawful
agent and attorney-in-fact, with full power and authority for and
on behalf of the undersigned to prepare or cause to be prepared,
sign, file with the SEC and furnish to any other person all
certificates, instruments, agreements and documents necessary to
comply with section 13(d) and section 16(a) of the Securities
Exchange Act of 1934, as amended, in connection with said
purchases, and to do and perform every act necessary and proper
to be done incident to the exercise of the foregoing power, as
fully as the undersigned might or could do if personally present,
until such time as the undersigned file with the SEC a statement
terminating this Agreement Regarding Joint Filing of Statement on
Schedule 13D or 13G.

DATED:    May 15, 1998.


  /s/ Lang H. Gerhard             WEST HIGHLAND PARTNERS, L.P.
Lang H. Gerhard                         
                                        By:  /s/ Lang H. Gerhard  
                                             Lang H. Gerhard,
WEST HIGHLAND CAPITAL, INC.                  General Partner

By:    /s/ Bonnie George         
     Bonnie George, Chief               BUTTONWOOD PARTNERS, L.P.
     Operating Officer             
                                        By:  /s/ Lang H. Gerhard  
                                             Lang H. Gerhard, 
ESTERO PARTNERS, LLC                         General Partner
                                             
By:    /s/ Lang H. Gerhard           
     Lang H. Gerhard, 
     Manager

                              Page 12 of 12

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