<SEC-DOCUMENT>0001193125-19-162405-index.html : 20190531
<SEC-HEADER>0001193125-19-162405.hdr.sgml : 20190531
<ACCEPTANCE-DATETIME>20190531120055
ACCESSION NUMBER:		0001193125-19-162405
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		4
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20181231
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<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20181231
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FILED AS OF DATE:		20190531
DATE AS OF CHANGE:		20190531

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LATTICE SEMICONDUCTOR CORP
		CENTRAL INDEX KEY:			0000855658
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				930835214
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0102

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18032
		FILM NUMBER:		19869349

	BUSINESS ADDRESS:	
		STREET 1:		111 SW 5TH AVE., SUITE 700
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97204
		BUSINESS PHONE:		5032688000

	MAIL ADDRESS:	
		STREET 1:		111 SW 5TH AVE., SUITE 700
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97204
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>d721580dsd.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: d721580dsd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>d721580dex101.htm
<DESCRIPTION>EX-1.01
<TEXT>
Document 2 - file: d721580dex101.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g721580g15s57.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g721580g15s57.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g721580g48f20.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g721580g48f20.jpg

</DOCUMENT>
</SEC-DOCUMENT>