<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-END> SEP-30-1997 <CASH> 136,911 <SECURITIES> 4,835 <RECEIVABLES> 45,004 <ALLOWANCES> 0 <INVENTORY> 26,912 <CURRENT-ASSETS> 242,517 <PP&E> 53,554 <DEPRECIATION> 29,166 <TOTAL-ASSETS> 304,502 <CURRENT-LIABILITIES> 48,508 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 202,105 <OTHER-SE> (39,445) <TOTAL-LIABILITY-AND-EQUITY> 304,502 <SALES> 246,947 <TOTAL-REVENUES> 246,947 <CGS> 109,003 <TOTAL-COSTS> 109,003 <OTHER-EXPENSES> 86,825 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,635 <INCOME-PRETAX> 49,484 <INCOME-TAX> 16,865 <INCOME-CONTINUING> 32,742 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 32,742 <EPS-PRIMARY> 0.85 <EPS-DILUTED> 0.85