<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> JAN-01-1999 <PERIOD-END> JUN-30-1999 <CASH> 47,216 <SECURITIES> 152,486 <RECEIVABLES> 41,390 <ALLOWANCES> 3,060 <INVENTORY> 45,400 <CURRENT-ASSETS> 298,629 <PP&E> 65,409 <DEPRECIATION> 26,747 <TOTAL-ASSETS> 339,859 <CURRENT-LIABILITIES> 28,715 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 2,529 <OTHER-SE> 308,615 <TOTAL-LIABILITY-AND-EQUITY> 339,859 <SALES> 112,878 <TOTAL-REVENUES> 112,878 <CGS> 0 <TOTAL-COSTS> 50,901 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 24,889 <INCOME-TAX> 8,946 <INCOME-CONTINUING> 15,943 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 15,943 <EPS-BASIC> 0.74 <EPS-DILUTED> 0.73