<ARTICLE> 5
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-2000
<PERIOD-START>                             JAN-01-2000
<PERIOD-END>                               JUN-30-2000
<CASH>                                          55,197
<SECURITIES>                                     8,294
<RECEIVABLES>                                   60,187
<ALLOWANCES>                                     1,689
<INVENTORY>                                     26,218
<CURRENT-ASSETS>                               171,089
<PP&E>                                          28,992
<DEPRECIATION>                                  14,905
<TOTAL-ASSETS>                                 220,352
<CURRENT-LIABILITIES>                           65,139
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                            18
<OTHER-SE>                                     155,195
<TOTAL-LIABILITY-AND-EQUITY>                   220,352
<SALES>                                        144,783
<TOTAL-REVENUES>                               144,783
<CGS>                                           63,907
<TOTAL-COSTS>                                   63,907
<OTHER-EXPENSES>                                45,773<F1>
<LOSS-PROVISION>                                   439
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                 34,664
<INCOME-TAX>                                    11,434
<INCOME-CONTINUING>                             23,230
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    23,230
<EPS-BASIC>                                       0.67
<EPS-DILUTED>                                     0.61
<FN>
<F1>Includes litigation reserve release of $1,843K and $1,633K of interest income.
</FN>