{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LS51NSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LS51NSR","canonicalUrl":"https://icboms.com/texas-instruments/SN74LS51NSR","factsUrl":"https://icboms.com/api/mcp/products/SN74LS51NSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74LS series AND-OR-INVERT Gate, SN74LS51NSR, 2 circuits, 10 inputs, Single-Ended output, 14-SOIC package, Surface Mount, 4.75V~5.25V supply.","salesMarkdown":"## 74LS AND-OR-INVERT logic in a 14-SOIC footprint The SN74LS51NSR is a dual AND-OR-INVERT gate from the 74LS low-power Schottky family, packing two independent logic circuits in a single 14-SOIC package. Each gate implements the AND-OR-INVERT function — the first stage ANDs grouped inputs, then ORs the results, and inverts the final output — giving you a compact way to collapse multiple product-of-sums expressions into one device. Total input count is 10, split as 3, 3, 2, and 2 across the two gates, which maps directly to common combinatorial logic like address decoding or data-path gating. Output high current is 400 µA and output low is 8 mA: the high-side sourcing is intentionally weak to limit noise on the bus, while the low-side sinking is strong enough to drive one or two standard TTL loads or a handful of 74LS inputs without external buffers. No Schmitt trigger on the inputs, so the switching threshold follows the standard 74LS V_IH/V_IL levels — clean edges on the input signal matter more here than with a Schmitt-triggered gate. ## Surface-mount package and tape-and-reel handling Available in Tape & Reel (TR) and Cut Tape (CT) options, which means it can feed into automated pick-and-place lines directly from the reel or be sampled in smaller cut lengths for prototype builds. Surface-mount mounting type keeps the board assembly in the reflow oven — no through-hole step, which simplifies the BOM assembly process for a mixed-technology board. ## Active lifecycle and compliance documentation RoHS3 compliant, so it meets the latest EU restriction on hazardous substances — no lead, mercury, cadmium, or the other restricted materials in the package or solder terminations.","metaTitle":"Texas Instruments SN74LS51NSR AND-OR-INVERT Gate, 74LS","metaDescription":"SN74LS51NSR dual AND-OR-INVERT gate, 74LS family, 4.75V–5.25V supply, 10 inputs, 14-SOIC. Active production, RoHS3. Request a quote.","metaKeywords":null},"attributes":{"series":"74LS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"74LS","Package":"Tape & Reel (TR); Cut Tape (CT)","Logic Type":"AND/OR/INVERT Gate","Output Type":"Single-Ended","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.209\\\", 5.30mm Width)","lifecycle_stage":"eol_hot","Number of Inputs":"10 Input (3, 3, 2, 2)","Voltage - Supply":"4.75V ~ 5.25V","Number of Circuits":"2","Operating Temperature":"0°C ~ 70°C","Schmitt Trigger Input":"No","Supplier Device Package":"14-SO","Current - Output High, Low":"400µA, 8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.58","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.58000","currency":"USD"},{"qty":10,"price":"$1.41000","currency":"USD"},{"qty":25,"price":"$1.33840","currency":"USD"},{"qty":100,"price":"$1.09950","currency":"USD"},{"qty":250,"price":"$1.02784","currency":"USD"},{"qty":500,"price":"$0.90832","currency":"USD"},{"qty":1000,"price":"$0.71709","currency":"USD"},{"qty":2000,"price":"$0.67650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1b04ed38f6444072eafcd7ca13ce0329.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LS51NSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LS51NSR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}