{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HC251N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HC251N","canonicalUrl":"https://icboms.com/texas-instruments/SN74HC251N","factsUrl":"https://icboms.com/api/mcp/products/SN74HC251N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74HC251N, 74HC series, Multiplexer, 1 x 8:1 circuit, Through Hole 16-DIP (0.300\", 7.62mm), Single Supply 2V ~ 6V, -40°C ~ 85°C.","salesMarkdown":"## Package and mounting The SN74HC251N is a single 8-to-1 multiplexer in a 16-pin DIP package. It selects one of eight data inputs and routes it to a single output, controlled by a three-bit address. ## Output drive — what 7.8 mA means for your load The high and low output current is rated at 7.8 mA each. That's enough to drive standard CMOS inputs and low-power logic, but don't plan on lighting an LED or pulling a relay coil directly — you'll want a buffer or transistor stage. On a repair bench, if the board's output trace looks clean but the next gate isn't toggling, check that the load doesn't exceed this figure. ## Lifecycle and supply posture The SN74HC251N carries an Active product status and is ROHS3 compliant.","metaTitle":"SN74HC251N Multiplexer, 1 x 8:1, 16-DIP, 74HC Series","metaDescription":"TI SN74HC251N 8-to-1 multiplexer in 16-DIP. Single supply 2V–6V, industrial temp -40°C to 85°C. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Multiplexer","Series":"74HC","Circuit":"1 x 8:1","Package":"Tube","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Independent Circuits":"1","Operating Temperature":"-40°C ~ 85°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-PDIP","Current - Output High, Low":"7.8mA, 7.8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.93","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.93000","currency":"USD"},{"qty":10,"price":"$0.82200","currency":"USD"},{"qty":25,"price":"$0.77240","currency":"USD"},{"qty":100,"price":"$0.63020","currency":"USD"},{"qty":250,"price":"$0.58540","currency":"USD"},{"qty":500,"price":"$0.49820","currency":"USD"},{"qty":1000,"price":"$0.39856","currency":"USD"},{"qty":2500,"price":"$0.36120","currency":"USD"},{"qty":5000,"price":"$0.35250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8487dc230fb8c2a9dad308c94174db8e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the function of the 74HC251 multiplexer?","answer":"It is a single 8-to-1 multiplexer: it selects one of eight data inputs based on a three-bit address and routes that signal to the single output. The 74HC family operates from 2V to 6V single supply."},{"question":"What is the difference between 74HC251 and 74LS251?","answer":"The 74HC251 runs on CMOS technology with a wider supply range (2V to 6V) and lower power consumption than the 74LS251 bipolar version, which typically runs on 5V and draws higher supply current. The HC variant also offers the full industrial temperature range (-40°C to 85°C) versus the 74LS251's commercial 0°C to 70°C range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HC251N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HC251N 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}}