-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 EOe2FivWDC60no8PEkrrosjLOSHLuri1eRxvUnEMEj04/yKcMg8qpNyvXl7pGGpb
 NoEqnlt3ZUyM8imsGtoHyA==

<SEC-DOCUMENT>0000950134-04-016949.txt : 20041110
<SEC-HEADER>0000950134-04-016949.hdr.sgml : 20041110
<ACCEPTANCE-DATETIME>20041109163433
ACCESSION NUMBER:		0000950134-04-016949
CONFORMED SUBMISSION TYPE:	10-Q
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20041002
FILED AS OF DATE:		20041109
DATE AS OF CHANGE:		20041109

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CADENCE DESIGN SYSTEMS INC
		CENTRAL INDEX KEY:			0000813672
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				770148231
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0102

	FILING VALUES:
		FORM TYPE:		10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10606
		FILM NUMBER:		041130054

	BUSINESS ADDRESS:	
		STREET 1:		2655 SEELY ROAD BLDG 5
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
		BUSINESS PHONE:		4089431234

	MAIL ADDRESS:	
		STREET 1:		555 RIVER OAKS PARKWAY
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ECAD INC /DE/
		DATE OF NAME CHANGE:	19880609
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-Q
<SEQUENCE>1
<FILENAME>f03096e10vq.htm
<DESCRIPTION>FORM 10-Q
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.01
<SEQUENCE>2
<FILENAME>f03096exv31w01.txt
<DESCRIPTION>EXHIBIT 31.01
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.02
<SEQUENCE>3
<FILENAME>f03096exv31w02.txt
<DESCRIPTION>EXHIBIT 31.02
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.01
<SEQUENCE>4
<FILENAME>f03096exv32w01.txt
<DESCRIPTION>EXHIBIT 32.01
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.02
<SEQUENCE>5
<FILENAME>f03096exv32w02.txt
<DESCRIPTION>EXHIBIT 32.02
</DOCUMENT>
</SUBMISSION>