Exhibit 32.1


      CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER
           PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
                 SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I,  Lothar  Maier,  certify,  pursuant  to 18 U.S.C.  Section  1350,  as adopted
pursuant to Section 906 of the  Sarbanes-Oxley  Act of 2002,  that the Quarterly
Report of Linear  Technology  Corporation on Form 10-Q for the quarterly  period
ended October 2, 2005 fully complies with the  requirements  of Section 13(a) or
15(d) of the Securities  Exchange Act of 1934 and that information  contained in
such Quarterly Report on Form 10-Q fairly presents in all material  respects the
financial condition and results of operations of Linear Technology Corporation.


         Date: November 14, 2005             By:    /s/ Lothar Maier
                                             ----------------------------------
                                             Name:  Lothar Maier
                                             Title: Chief Executive Officer


I, Paul  Coghlan,  certify,  pursuant  to 18 U.S.C.  Section  1350,  as  adopted
pursuant to Section 906 of the  Sarbanes-Oxley  Act of 2002,  that the Quarterly
Report of Linear  Technology  Corporation on Form 10-Q for the quarterly  period
ended October 2, 2005 fully complies with the  requirements  of Section 13(a) or
15(d) of the Securities  Exchange Act of 1934 and that information  contained in
such Quarterly Report on Form 10-Q fairly presents in all material  respects the
financial condition and results of operations of Linear Technology Corporation.


         Date: November 14, 2005             By:    /s/ Paul Coghlan
                                             ----------------------------------
                                             Name:  Paul Coghlan
                                             Title: Chief Financial Officer


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