<ARTICLE> 5 <MULTIPLIER> 1000 <PERIOD-TYPE> 6-MOS <FISCAL-YEAR-END> DEC-31-2000 <PERIOD-END> JUN-30-2000 <CASH> 9,934 <SECURITIES> 16,258 <RECEIVABLES> 32,163 <ALLOWANCES> 144 <INVENTORY> 20,983 <CURRENT-ASSETS> 88,174 <PP&E> 45,013 <DEPRECIATION> 29,550 <TOTAL-ASSETS> 114,156 <CURRENT-LIABILITIES> 30,955 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 22,536 <OTHER-SE> 60,665 <TOTAL-LIABILITY-AND-EQUITY> 114,156 <SALES> 108,575 <TOTAL-REVENUES> 108,575 <CGS> 56,806 <TOTAL-COSTS> 27,454 <OTHER-EXPENSES> (2,135) <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 26,450 <INCOME-TAX> 8,728 <INCOME-CONTINUING> 17,722 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 17,722 <EPS-BASIC> 0.79 <EPS-DILUTED> 0.78