<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1998 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   9-MOS
<FISCAL-YEAR-END>                          JUN-30-1998             JUN-30-1998
<PERIOD-START>                             JAN-01-1998             JUL-01-1997
<PERIOD-END>                               MAR-31-1998             MAR-31-1998
<CASH>                                          35,401                  35,401
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   34,086                  34,086
<ALLOWANCES>                                   (3,688)                 (3,688)
<INVENTORY>                                     14,996                  14,996
<CURRENT-ASSETS>                                86,065                  86,065
<PP&E>                                          29,682                  29,682
<DEPRECIATION>                                (14,882)                (14,882)
<TOTAL-ASSETS>                                 110,310                 110,310
<CURRENT-LIABILITIES>                           55,248                  55,248
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                          106,320                 106,320
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                    (54,027)                (54,027)
<TOTAL-LIABILITY-AND-EQUITY>                   110,310                 110,310
<SALES>                                         35,712                 111,385
<TOTAL-REVENUES>                                35,712                 111,385
<CGS>                                           14,191                  45,018
<TOTAL-COSTS>                                   14,191                  45,018
<OTHER-EXPENSES>                                14,374                  68,323
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   0                       0
<INCOME-PRETAX>                                  6,942                 (1,498)
<INCOME-TAX>                                     1,739                   7,611
<INCOME-CONTINUING>                              5,203                 (9,109)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     5,203                 (9,109)
<EPS-PRIMARY>                                     0.18                  (0.32)
<EPS-DILUTED>                                     0.17                  (0.32)
        

</TABLE>