<ARTICLE> 5
       
                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               SEP-30-1998
<CASH>                                          29,519
<SECURITIES>                                     7,969
<RECEIVABLES>                                   17,842
<ALLOWANCES>                                     (340)
<INVENTORY>                                     11,655
<CURRENT-ASSETS>                                70,694
<PP&E>                                          26,362
<DEPRECIATION>                                   8,298
<TOTAL-ASSETS>                                 110,914
<CURRENT-LIABILITIES>                           13,796
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             8
<OTHER-SE>                                      93,936
<TOTAL-LIABILITY-AND-EQUITY>                   110,914
<SALES>                                         78,548
<TOTAL-REVENUES>                                78,548
<CGS>                                           39,394
<TOTAL-COSTS>                                   68,245
<OTHER-EXPENSES>                                 (852)
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               (162)
<INCOME-PRETAX>                                 10,211
<INCOME-TAX>                                     5,359
<INCOME-CONTINUING>                              4,852
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,852
<EPS-PRIMARY>                                     0.42
<EPS-DILUTED>                                     0.40