-----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,
 Ju8ia0Nxg9AIWxcb8d7qgdBi3dzaNu3zFY3dIvRquSHQCeKex98qSrHaO2+6C0rC
 M1zYgTKPtq9oow7vDVIqWQ==

<SEC-DOCUMENT>0001005477-08-000422.txt : 20080123
<SEC-HEADER>0001005477-08-000422.hdr.sgml : 20080123
<ACCEPTANCE-DATETIME>20080123141100
ACCESSION NUMBER:		0001005477-08-000422
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080118
FILED AS OF DATE:		20080123
DATE AS OF CHANGE:		20080123

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CATALYST SEMICONDUCTOR INC
		CENTRAL INDEX KEY:			0000899636
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				770083129
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0430

	BUSINESS ADDRESS:	
		STREET 1:		2975 STENDER WAY
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054-3214
		BUSINESS PHONE:		4085421000

	MAIL ADDRESS:	
		STREET 1:		2975 STENDER WAY
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95054-3214

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Seligman Spectrum Focus (Master) Fund
		CENTRAL INDEX KEY:			0001404098
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21488
		FILM NUMBER:		08544186

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 309 UGLAND HOUSE
		STREET 2:		113 SOUTH CHURCH STREET
		CITY:			GEORGE TOWN, GRAND CAYMAN
		STATE:			E9
		ZIP:			BWI
		BUSINESS PHONE:		212-850-1864

	MAIL ADDRESS:	
		STREET 1:		100 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar123.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-01-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000899636</issuerCik>
        <issuerName>CATALYST SEMICONDUCTOR INC</issuerName>
        <issuerTradingSymbol>CATS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001404098</rptOwnerCik>
            <rptOwnerName>Seligman Spectrum Focus (Master) Fund</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PO BOX 309GT, UGLAND HOUSE</rptOwnerStreet1>
            <rptOwnerStreet2>SOUTH CHURCH STREET</rptOwnerStreet2>
            <rptOwnerCity>GEORGE TOWN, GRAND CAYMAN</rptOwnerCity>
            <rptOwnerState>E9</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>CAYMAN ISLANDS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-01-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>22500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.5755</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1884066</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Paul B. Goucher, authorized person</signatureName>
        <signatureDate>2008-01-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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