<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CADENCE
DESIGN SYSTEMS, INC.'S ANNUAL REPORT ON FORM 10-K FOR THE FISCAL YEAR ENDED
JANUARY 3, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
                                                                       
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          JAN-03-1998             JAN-03-1998             JAN-03-1998
<PERIOD-START>                             DEC-29-1996             DEC-29-1996             DEC-29-1996
<PERIOD-END>                               MAR-29-1997             JUN-28-1997             SEP-27-1997
<CASH>                                         314,885                 316,758                 332,557
<SECURITIES>                                    13,043                  44,567                  49,103
<RECEIVABLES>                                  111,362                 128,366                 154,290
<ALLOWANCES>                                     3,579                   6,557                   4,089
<INVENTORY>                                          0                       0                       0
<CURRENT-ASSETS>                               489,828                 548,396                 610,816
<PP&E>                                         284,903                 304,033                 322,388
<DEPRECIATION>                                 116,600                 115,350                 128,902
<TOTAL-ASSETS>                                 740,178                 833,248                 934,979
<CURRENT-LIABILITIES>                          228,337                 241,071                 238,856
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                       301,982                 342,621                 389,343
<OTHER-SE>                                     183,166                 220,445                 276,137
<TOTAL-LIABILITY-AND-EQUITY>                   740,178                 833,248                 934,979
<SALES>                                        187,548                 398,015                 632,881
<TOTAL-REVENUES>                               187,548                 398,015                 632,881
<CGS>                                           38,897                  82,491                 129,303
<TOTAL-COSTS>                                   38,897                  82,491                 129,303
<OTHER-EXPENSES>                               110,374                 239,866                 353,305
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                                 736                   1,817                   2,149
<INCOME-PRETAX>                                 53,032                  93,669                 172,670
<INCOME-TAX>                                    15,910                  28,101                  51,801
<INCOME-CONTINUING>                             37,122                  65,568                 120,869
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    37,122                  65,568                 120,869
<EPS-PRIMARY>                                     0.21                    0.36                    0.63
<EPS-DILUTED>                                     0.19                    0.32                    0.56