<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM CADENCE
DESIGN SYSTEMS, INC.'S QUARTERLY REPORT ON FORM 10-Q FOR THE PERIOD ENDED
SEPTEMBER 30, 2000, AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-30-2000
<PERIOD-START>                             JAN-02-2000
<PERIOD-END>                               SEP-30-2000
<CASH>                                         122,190
<SECURITIES>                                     5,788
<RECEIVABLES>                                  256,302
<ALLOWANCES>                                    50,416
<INVENTORY>                                     17,285
<CURRENT-ASSETS>                               488,577
<PP&E>                                         654,723
<DEPRECIATION>                                 306,435
<TOTAL-ASSETS>                               1,415,989
<CURRENT-LIABILITIES>                          447,303
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       567,773
<OTHER-SE>                                     349,643
<TOTAL-LIABILITY-AND-EQUITY>                 1,415,989
<SALES>                                              0
<TOTAL-REVENUES>                               888,636
<CGS>                                                0
<TOTAL-COSTS>                                  327,967
<OTHER-EXPENSES>                               554,507
<LOSS-PROVISION>                                 1,443
<INTEREST-EXPENSE>                               1,814
<INCOME-PRETAX>                                 10,188
<INCOME-TAX>                                     2,700
<INCOME-CONTINUING>                              7,488
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,488
<EPS-BASIC>                                       0.03
<EPS-DILUTED>                                     0.03