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<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 45,617
<SECURITIES> 190,510
<RECEIVABLES> 15,592
<ALLOWANCES> 308
<INVENTORY> 2,718
<CURRENT-ASSETS> 261,063
<PP&E> 17,624
<DEPRECIATION> 12,380
<TOTAL-ASSETS> 287,464
<CURRENT-LIABILITIES> 22,647
<BONDS> 0
0
0
<COMMON> 27
<OTHER-SE> 255,259
<TOTAL-LIABILITY-AND-EQUITY> 287,464
<SALES> 21,925
<TOTAL-REVENUES> 28,988
<CGS> 12,623
<TOTAL-COSTS> 12,915
<OTHER-EXPENSES> 5,553
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 51
<INCOME-PRETAX> 10,271
<INCOME-TAX> 1,843
<INCOME-CONTINUING> 0
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 8,428
<EPS-BASIC> 0.31
<EPS-DILUTED> 0.29
</TABLE>
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