
<TABLE> <S> <C>


<ARTICLE>                                     5
<LEGEND>                   THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION
                           EXTRACTED FROM THE COMPANY'S CONSOLIDATED  FINANCIAL
                           STATEMENTS FOR THE THREE MONTHS ENDED MARCH 31, 1998
                           AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
                           FINANCIAL STATEMENTS
</LEGEND>
       
<S>                                                   <C>
<PERIOD-TYPE>                                         3-MOS
<FISCAL-YEAR-END>                                     DEC-31-1998
<PERIOD-START>                                        JAN-01-1998
<PERIOD-END>                                          MAR-31-1998
<CASH>                                                16,519
<SECURITIES>                                          51,555
<RECEIVABLES>                                         14,238
<ALLOWANCES>                                          (1,352)
<INVENTORY>                                           18,426
<CURRENT-ASSETS>                                      100,863
<PP&E>                                                39,848
<DEPRECIATION>                                        30,988
<TOTAL-ASSETS>                                        110,822
<CURRENT-LIABILITIES>                                 28,519
<BONDS>                                               29,263
<PREFERRED-MANDATORY>                                 69,970
<PREFERRED>                                           0
<COMMON>                                              461
<OTHER-SE>                                            (85,449)
<TOTAL-LIABILITY-AND-EQUITY>                          110,822
<SALES>                                               16,826
<TOTAL-REVENUES>                                      16,826
<CGS>                                                 8,896
<TOTAL-COSTS>                                         16,941    <F1>
<OTHER-EXPENSES>                                       972      <F2>
<LOSS-PROVISION>                                      0
<INTEREST-EXPENSE>                                    662
<INCOME-PRETAX>                                       (949)
<INCOME-TAX>                                          (5,042)
<INCOME-CONTINUING>                                   4,093
<DISCONTINUED>                                        0
<EXTRAORDINARY>                                       0
<CHANGES>                                             0
<NET-INCOME>                                          4,093
<EPS-PRIMARY>                                         0.09
<EPS-DILUTED>                                         0.09

<FN>
 <F1>                      INCLUDES S&A AND RD&E OF 5,007 AND 3,038 RESPECTIVELY
 <F2>                      INCLUDES ROYALTY INCOME OF 1,834 AND RESTRUCTURING CHARGES OF 2,800
</FN>
        

</TABLE>
