<TABLE> <S> <C>

<ARTICLE>  5
<LEGEND>   This schedule contains summary financial information extracted
           from the Balance Sheet and Statement of Operations included in the
           Company's Form 10-K for the year ended December 31, 1999 and is
           qualified in its entirety by reference to such Financial Statements.
</LEGEND>
<MULTIPLIER>1000

<S>                                       <C>           <C>          <C>
<FISCAL-YEAR-END>                         Dec-31-1999   Dec-31-1998  Dec-31-1997
<PERIOD-START>                            Jan-01-1999   Jan-01-1998  Jan-01-1997
<PERIOD-END>                              Dec-31-1999   Dec-31-1998  Dec-31-1997
<PERIOD-TYPE>                             12-MOS        12-MOS       12-MOS
<CASH>                                         153,016       17,023          6,170
<SECURITIES>                                   161,120       17,635         14,953
<RECEIVABLES>                                   41,445       24,047         22,760
<ALLOWANCES>                                         0        1,005          1,190
<INVENTORY>                                     32,070       21,288         15,184
<CURRENT-ASSETS>                               391,310       82,863         62,897
<PP&E>                                          59,772       71,687         56,271
<DEPRECIATION>                                       0       31,839         23,920
<TOTAL-ASSETS>                                 460,953      132,060        112,431
<CURRENT-LIABILITIES>                           36,048       19,158         18,724
<BONDS>                                              0            0              0
<PREFERRED-MANDATORY>                                0            0              0
<PREFERRED>                                          0            0              0
<COMMON>                                            36           15             14
<OTHER-SE>                                     420,112      108,191         89,268
<TOTAL-LIABILITY-AND-EQUITY>                   460,953      132,060        112,431
<SALES>                                        182,413      103,012         87,505
<TOTAL-REVENUES>                               187,021      112,792        102,119
<CGS>                                          103,478       66,540         59,614
<TOTAL-COSTS>                                  107,238       74,061         71,245
<OTHER-EXPENSES>                                50,719       31,029         56,418
<LOSS-PROVISION>                                     0            0              0
<INTEREST-EXPENSE>                                 279          440            248
<INCOME-PRETAX>                                 34,493        8,986        (23,936)
<INCOME-TAX>                                     9,280        1,083            417
<INCOME-CONTINUING>                             25,213        7,903        (24,353)
<DISCONTINUED>                                       0            0              0
<EXTRAORDINARY>                                      0            0              0
<CHANGES>                                            0            0              0
<NET-INCOME>                                    25,213        7,903        (24,353)
<EPS-BASIC>                                    $0.39        $0.14         ($0.44)
<EPS-DILUTED>                                    $0.37        $0.13         ($0.44)


</TABLE>