<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               MAR-31-2000
<CASH>                                          49,091
<SECURITIES>                                    14,477
<RECEIVABLES>                                   54,197
<ALLOWANCES>                                     1,439
<INVENTORY>                                     24,698
<CURRENT-ASSETS>                               157,379
<PP&E>                                          25,537
<DEPRECIATION>                                  13,394
<TOTAL-ASSETS>                                 195,058
<CURRENT-LIABILITIES>                           61,378
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            18
<OTHER-SE>                                     133,662
<TOTAL-LIABILITY-AND-EQUITY>                   195,058
<SALES>                                         67,295
<TOTAL-REVENUES>                                67,295
<CGS>                                           29,737
<TOTAL-COSTS>                                   29,737
<OTHER-EXPENSES>                                20,012<F1>
<LOSS-PROVISION>                                   189
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 17,357
<INCOME-TAX>                                     5,728
<INCOME-CONTINUING>                             11,629
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    11,629
<EPS-BASIC>                                       0.34
<EPS-DILUTED>                                     0.31
<FN>
<F1>INCLUDES LITIGATION RESERVE RELEASE OF $1,843K.
</FN>