<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> SEP-30-1999 <CASH> 42,260 <SECURITIES> 142,236 <RECEIVABLES> 85,368 <ALLOWANCES> 4,095 <INVENTORY> 40,417 <CURRENT-ASSETS> 321,953 <PP&E> 67,867 <DEPRECIATION> 28,475 <TOTAL-ASSETS> 363,861 <CURRENT-LIABILITIES> 42,980 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 2,530 <OTHER-SE> 318,351 <TOTAL-LIABILITY-AND-EQUITY> 363,861 <SALES> 212,714 <TOTAL-REVENUES> 212,714 <CGS> 0 <TOTAL-COSTS> 86,310 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 52,524 <INCOME-TAX> 18,344 <INCOME-CONTINUING> 34,180 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 34,180 <EPS-BASIC> 1.61 <EPS-DILUTED> 1.60