<ARTICLE>                                                                    5
<LEGEND>
                            FORM 10-Q FOR THE NINE MONTHS ENDED MARCH 28, 1999
</LEGEND>

<CIK>                                                               0000791907
<NAME>                                           LINEAR TECHNOLOGY CORPORATION
<MULTIPLIER>                                                             1,000
       

                                                                

<PERIOD-TYPE>                                                            9-MOS
<FISCAL-YEAR-END>                                                  JUN-27-1999
<PERIOD-START>                                                     JUN-29-1998
<PERIOD-END>                                                       MAR-28-1999
<CASH>                                                                 103,911
<SECURITIES>                                                           591,381
<RECEIVABLES>                                                           65,636
<ALLOWANCES>                                                               803
<INVENTORY>                                                             15,775
<CURRENT-ASSETS>                                                       820,054
<PP&E>                                                                 242,195
<DEPRECIATION>                                                         100,998
<TOTAL-ASSETS>                                                         961,251
<CURRENT-LIABILITIES>                                                  107,309
<BONDS>                                                                      0
<PREFERRED-MANDATORY>                                                        0
<PREFERRED>                                                                  0
<COMMON>                                                               293,347
<OTHER-SE>                                                             546,713
<TOTAL-LIABILITY-AND-EQUITY>                                           961,251
<SALES>                                                                366,145
<TOTAL-REVENUES>                                                       366,145
<CGS>                                                                  103,334
<TOTAL-COSTS>                                                          103,334
<OTHER-EXPENSES>                                                        77,134
<LOSS-PROVISION>                                                             0
<INTEREST-EXPENSE>                                                           0
<INCOME-PRETAX>                                                        206,050
<INCOME-TAX>                                                            65,936
<INCOME-CONTINUING>                                                    140,114
<DISCONTINUED>                                                               0
<EXTRAORDINARY>                                                              0
<CHANGES>                                                                    0
<NET-INCOME>                                                           140,114
<EPS-PRIMARY>                                                             0.92
<EPS-DILUTED>                                                             0.89