{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS157D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS157D","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS157D","factsUrl":"https://icboms.com/api/mcp/products/SN74LS157D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74LS157D, 74LS series, Type Multiplexer, Circuit 4 x 2:1, Single Supply 4.75V ~ 5.25V, Surface Mount 16-SOIC, 0°C ~ 70°C.","salesMarkdown":"## Output drive and what it means for the load The SN74LS157D sources 400 µA and sinks 8 mA per output. That sink capability is enough to drive a standard TTL input or a low-power LED indicator directly, but it will not handle a relay coil or a bus transceiver without a buffer. If the downstream load demands more than 8 mA per channel, plan on a line driver or a higher-drive logic family. ## Lifecycle and sourcing reality Listed as Active with ROHS3 compliance.","metaTitle":"SN74LS157D 74LS Quad 2:1 Multiplexer, SOIC-16, Active","metaDescription":"TI SN74LS157D 74LS quad 2:1 multiplexer in SOIC-16. 4.75V–5.25V supply, 0°C–70°C. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Multiplexer","Series":"74LS","Circuit":"4 x 2:1","Package":"Tube","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Independent Circuits":"1","Operating Temperature":"0°C ~ 70°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-SOIC","Current - Output High, Low":"400µA, 8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.96","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.96000","currency":"USD"},{"qty":10,"price":"$0.84700","currency":"USD"},{"qty":25,"price":"$0.79520","currency":"USD"},{"qty":100,"price":"$0.64900","currency":"USD"},{"qty":250,"price":"$0.60284","currency":"USD"},{"qty":500,"price":"$0.51304","currency":"USD"},{"qty":1000,"price":"$0.41043","currency":"USD"},{"qty":2500,"price":"$0.37195","currency":"USD"},{"qty":5000,"price":"$0.36300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cc7d377b82ea56b486be0f1e072d9f7e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the function of the SN74LS157D?","answer":"It is a quad 2:1 multiplexer — four independent 2-input multiplexers sharing a common select line. Each multiplexer passes one of two data inputs to its output based on the select signal."},{"question":"Can I use a 74LS157 in a DIP package instead of the SN74LS157D SOIC?","answer":"Yes — the SN74LS157N is the 16-pin DIP version of the same quad 2:1 multiplexer. Function and pinout are identical; the only difference is the package footprint."},{"question":"What is the recommended replacement or equivalent for the SN74LS157D?","answer":"No direct replacement is listed. The SN74LS348N is a different device (priority encoder, 1 x 8:3) and is not a functional substitute. For a form-fit-function alternative, look at the 74HC157 or 74HCT157 in SOIC-16 if the system can tolerate the supply voltage difference."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS157D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS157D 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}}