{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74S251N3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74S251N3","canonicalUrl":"https://icboms.com/texas-instruments/SN74S251N3","factsUrl":"https://icboms.com/api/mcp/products/SN74S251N3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74S251N3, 74S series 8-line input multiplexer, through-hole package, active production, RoHS non-compliant.","salesMarkdown":"## What the SN74S251N3 is and where it fits The Texas Instruments SN74S251N3 is an 8-line input multiplexer from the 74S Schottky TTL family. It selects one of eight data sources and routes it to a single output, a common function in data-routing, address decoding, and signal-switching applications in legacy digital systems. ## RoHS compliance and assembly implications This part is RoHS non-compliant, meaning it uses lead-bearing solder terminations.","metaTitle":"SN74S251N3 8-Line Input Multiplexer, Active, Through Hole","metaDescription":"SN74S251N3 is an 8-line input multiplexer from the 74S family, active production, 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":"$0.41","stockQuantity":0,"priceTiers":[{"qty":740,"price":"$0.41000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b5985d0485a718837e2134cd6c4532c8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the function of the SN74S251N3?","answer":"The SN74S251N3 is an 8-line input multiplexer. It selects one of eight input signals and routes it to a single output, controlled by a three-bit address. It is used in data routing, address decoding, and signal selection in TTL logic systems."},{"question":"What is the equivalent of the SN74S251N3?","answer":"No direct pin-compatible equivalent is listed on this record. The SN74LS348N is a related 74-series priority encoder (1 x 8:3) but it performs a different logic function and operates over a 0°C to 70°C temperature range — it is not a multiplexer substitute."},{"question":"Is the SN74S251N3 RoHS compliant?","answer":"No, the SN74S251N3 is RoHS non-compliant. It contains lead in its solder terminations and is not suitable for lead-free assembly processes without a waiver."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74S251N3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74S251N3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}