{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS145DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS145DR","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS145DR","factsUrl":"https://icboms.com/api/mcp/products/SN74LS145DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74LS145DR, 74LS series BCD-to-decimal decoder, 1 x 4:10 circuit, 16-SOIC surface mount, 4.75-5.25V supply, 0°C to 70°C.","salesMarkdown":"## BCD-to-decimal decoder, 1-of-10 output The SN74LS145DR is a 74LS-series BCD-to-decimal decoder that takes a 4-bit BCD input and asserts one of ten active-low outputs. The 1 x 4:10 configuration means a single decoder block maps four input lines to ten output lines — useful for driving numeric displays, relay banks, or multiplexing indicator lamps where you need to select one of ten states from a binary-coded input. Supply range is 4.75V to 5.25V, standard for 5V TTL logic. ## 16-SOIC surface-mount package and temperature grade The 1.27mm pin pitch is layout-friendly — two-layer boards handle the fan-out without vias. The supplier device package is also 16-SOIC, so the footprint matches the standard SOIC-16 land pattern. This covers benchtop instruments, office equipment, and indoor industrial control panels.","metaTitle":"SN74LS145DR 74LS Decoder, 1x4:10, 16-SOIC, Active","metaDescription":"TI SN74LS145DR 74LS BCD-to-decimal decoder, 1 x 4:10 configuration, 80mA sink output, 4.75-5.25V supply, 16-SOIC, active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Decoder","Series":"74LS","Circuit":"1 x 4:10","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"-, 80mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.08000","currency":"USD"},{"qty":10,"price":"$0.96600","currency":"USD"},{"qty":25,"price":"$0.91720","currency":"USD"},{"qty":100,"price":"$0.75330","currency":"USD"},{"qty":250,"price":"$0.70420","currency":"USD"},{"qty":500,"price":"$0.62232","currency":"USD"},{"qty":1000,"price":"$0.49131","currency":"USD"},{"qty":2500,"price":"$0.46350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c18d68b518b4667f78823eb521b5d02a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the output drive capability of SN74LS145DR?","answer":"The SN74LS145DR sinks up to 80mA per output pin in the low state (IOL). The high-level output current is not specified — the part is designed for active-low outputs driving loads to ground. For a 5V relay coil drawing 60mA, the decoder drives it directly with a series resistor; for higher currents, add an external transistor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS145DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS145DR 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}}