{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"74FCT521ASCX","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"74FCT521ASCX","canonicalUrl":"https://icboms.com/texas-instruments/74FCT521ASCX","factsUrl":"https://icboms.com/api/mcp/products/74FCT521ASCX","rawCanonicalId":null},"summary":{"shortDescription":"74FCT521ASCX, 74FCT series, Identity Comparator, Bulk package, Active lifecycle, RoHS non-compliant.","salesMarkdown":"The 74FCT521ASCX is an identity comparator from the 74FCT logic family. It compares two 8-bit words and outputs a match signal, used in address decoding, bus arbitration, and system monitoring where a quick equality check is needed. The part is marked as RoHS non-compliant, so it is intended for legacy or military-grade builds that accept tin-lead solder.","metaTitle":"74FCT521ASCX Identity Comparator, Active, Bulk Package","metaDescription":"74FCT521ASCX is an identity comparator from the 74FCT series. Active lifecycle, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.64","priceTiers":[{"qty":466,"price":"$0.64000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f0e37b3ddf4aaf3c020c094b557c7a26.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/74FCT521ASCX/alternatives.json"},"ai":{"faq":[{"question":"What is the cross reference for 74FCT521ASCX?","answer":"A functional peer is the 54F521DC, which is also an identity comparator. Verify pin compatibility and package differences before substituting."},{"question":"Is 74FCT521ASCX RoHS compliant?","answer":"No, the 74FCT521ASCX is RoHS non-compliant, meaning it uses tin-lead solder and is not suitable for lead-free assembly processes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/74FCT521ASCX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/74FCT521ASCX when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}