<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> MAR-31-2000 <PERIOD-START> JAN-01-2000 <PERIOD-END> MAR-31-2000 <CASH> 10,936 <SECURITIES> 72,439 <RECEIVABLES> 39,949 <ALLOWANCES> 1,311 <INVENTORY> 42,868 <CURRENT-ASSETS> 174,468 <PP&E> 39,253 <DEPRECIATION> 20,543 <TOTAL-ASSETS> 194,163 <CURRENT-LIABILITIES> 37,495 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 150,412 <OTHER-SE> 5,535 <TOTAL-LIABILITY-AND-EQUITY> 194,163 <SALES> 62,863 <TOTAL-REVENUES> 62,863 <CGS> 33,067 <TOTAL-COSTS> 33,067 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> (1,121) <INCOME-PRETAX> 15,044 <INCOME-TAX> 5,717 <INCOME-CONTINUING> 0 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 9,327 <EPS-BASIC> 0.30 <EPS-DILUTED> 0.28