{"product_id":"interdesign-639as3844e-integrated-circuit-ic-18-pin-dip-1982-vintage","title":"Interdesign 639AS3844E Integrated Circuit IC 18-Pin DIP 1982 Vintage","description":"ITEM SPECIFICS\u003cbr\u003eBrand: Interdesign\u003cbr\u003eMPN: 639AS3844E\u003cbr\u003eType: Integrated Circuit\u003cbr\u003eNumber of Pins: 18\u003cbr\u003ePackage: DIP\u003cbr\u003eMounting Type: Through Hole\u003cbr\u003eAdditional Visible Markings: 924C \/ hand-drawn ink mark near pin 1\u003cbr\u003eDate Code: 8220 (1982, week 20)\u003cbr\u003eQuantity: 1\u003cbr\u003eCondition: New\u003cbr\u003e\u003cbr\u003eDESCRIPTION\u003cbr\u003eInterdesign 639AS3844E integrated circuit in an 18-pin dual in-line package. The photographed unit is marked 639AS3844E, INTERDESIGN, 8220, and 924C, with a hand-drawn black ink mark near pin 1. Leads show light solder-coat irregularity; see photos.\u003cbr\u003e\u003cbr\u003eFeatures:\u003cbr\u003e18-pin dual in-line package for through-hole mounting.\u003cbr\u003eManufacturer and part number marked on the package.\u003cbr\u003e1982 date code.\u003cbr\u003eMade by Interdesign, the Sunnyvale, California semicustom IC company founded by 555 timer designer Hans Camenzind.\u003cbr\u003e\u003cbr\u003eCompatibility:\u003cbr\u003eDirect replacement for 639AS3844E and 639AS3844 in equipment that originally used this part. This is an application-specific part number, so match the full marking to the original component on your board before installing.\u003cbr\u003e\u003cbr\u003eQ\u0026amp;A:\u003cbr\u003eQ: What does this chip do?\u003cbr\u003eA: The 639AS3844E is an application-specific part number with no public datasheet. Match it to the original part in your equipment.\u003cbr\u003e\u003cbr\u003eQ: Who was Interdesign?\u003cbr\u003eA: Interdesign Inc. was founded by Hans Camenzind, designer of the 555 timer, and focused on semicustom integrated circuits under the Monochip name. Ferranti later acquired the company.\u003cbr\u003e\u003cbr\u003eQ: What does 8220 mean?\u003cbr\u003eA: 8220 is the date code (1982, week 20).\u003cbr\u003e\u003cbr\u003eTroubleshooting:\u003cbr\u003eCompare all markings to the original part before installing.\u003cbr\u003eConfirm pin 1 orientation using the end notch.\u003cbr\u003eStraighten leads gently before inserting into a socket or board.\u003cbr\u003e\u003cbr\u003eDISCLAIMER\u003cbr\u003ePlease review all photos and specifications before purchasing, and make sure this part is right for your application. Item is sold as shown in the photos.\u003cbr\u003e\u003cbr\u003eLEGAL DISCLAIMER\u003cbr\u003eAmerican Industrial Parts Group is not an authorized distributor, reseller, or representative of Interdesign. All product names, trademarks, brands, and logos are the property of their respective owners and are used for identification purposes only. As an independent reseller, the original manufacturer warranty does not apply.\u003cbr\u003e\u003cbr\u003e639AS3844E, 639AS3844, Interdesign 639AS3844E, Interdesign IC, Ferranti Interdesign, Interdesign Monochip, semicustom IC, custom IC replacement, 18-pin DIP IC, vintage IC 1982, obsolete integrated circuit, military surplus IC, vintage equipment repair IC.\u003cbr\u003e\u003cbr\u003eThank you for shopping with American Industrial Parts Group!","brand":"Interdesign","offers":[{"title":"Default Title","offer_id":50015593726107,"sku":"IND-639AS3844E-N","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/0857\/7435\/files\/interdesign-639as3844e-ic-18-pin-dip-1-american-industrial-parts-group.jpg?v=1793578170","url":"https:\/\/americanindustrialpartsgroup.com\/products\/interdesign-639as3844e-integrated-circuit-ic-18-pin-dip-1982-vintage","provider":"American Industrial Parts Group","version":"1.0","type":"link"}