<ARTICLE> 5 <MULTIPLIER> 1,000 <CURRENCY> US DOLLAR <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1999 <PERIOD-START> APR-01-1999 <PERIOD-END> JUN-30-1999 <EXCHANGE-RATE> 1 <CASH> 52,620 <SECURITIES> 557,616 <RECEIVABLES> 122,061 <ALLOWANCES> 1,642 <INVENTORY> 39,178 <CURRENT-ASSETS> 816,577 <PP&E> 295,030 <DEPRECIATION> 98,556 <TOTAL-ASSETS> 1,055,427 <CURRENT-LIABILITIES> 119,047 <BONDS> 54,516 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 1,507 <OTHER-SE> 865,344 <TOTAL-LIABILITY-AND-EQUITY> 1,055,427 <SALES> 145,852 <TOTAL-REVENUES> 188,929 <CGS> 22,896 <TOTAL-COSTS> 114,901 <OTHER-EXPENSES> 9,270 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 1,170 <INCOME-PRETAX> 64,758 <INCOME-TAX> 21,370 <INCOME-CONTINUING> 43,388 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 43,388 <EPS-BASIC> 0.29 <EPS-DILUTED> 0.28