{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AS27N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AS27N","canonicalUrl":"https://icboms.com/texas-instruments/SN74AS27N","factsUrl":"https://icboms.com/api/mcp/products/SN74AS27N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AS series NOR Gate, 3-circuit, 3-input, Through Hole, 14-DIP (0.300\", 7.62mm), Tube, SN74AS27N.","salesMarkdown":"## What this triple NOR gate brings to a 5V logic rail The SN74AS27N packs three independent 3-input NOR gates into a single 14-pin DIP, each gate swinging between 4.5V and 5.5V with a propagation delay of 5.5ns into a 50pF load at 5V — fast enough to keep up with most asynchronous glue logic in a 5V TTL system. ## Logic thresholds and output drive Input low threshold is 0.8V max, high threshold 2V min — standard TTL-compatible levels that let it interface directly with 74LS, 74S, and 74F families without level translation. Output drive is rated 2mA source and 20mA sink — the asymmetric drive is typical of AS logic, meaning the gate can sink a fan-out of 10 standard LS loads but sources only one. That matters when driving a bus line or LED: the low-side pull is strong, the high-side is weak. Housed in a 14-pin PDIP (0.300\" body width), the SN74AS27N is a through-hole part that fits standard breadboards and 0.100\" pitch prototyping grids — no fine-pitch soldering needed.","metaTitle":"SN74AS27N NOR Gate, 3-Ch 3-Inp, 14-DIP, 5.5ns @ 5V","metaDescription":"Texas Instruments SN74AS27N triple 3-input NOR gate in 14-DIP. Active production, ROHS3 compliant. 4.5V-5.5V supply, 5.5ns propagation delay. Quoted to order.","metaKeywords":null},"attributes":{"series":"74AS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"74AS","Package":"Tube","Logic Type":"NOR Gate","Mounting Type":"Through Hole","Package / Case":"14-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Number of Inputs":"3","Voltage - Supply":"4.5V ~ 5.5V","Number of Circuits":"3","Operating Temperature":"0°C ~ 70°C","Input Logic Level - Low":"0.8V","Supplier Device Package":"14-PDIP","Input Logic Level - High":"2V","Current - Output High, Low":"2mA, 20mA","Max Propagation Delay @ V, Max CL":"5.5ns @ 5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.89","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.89000","currency":"USD"},{"qty":10,"price":"$1.69900","currency":"USD"},{"qty":25,"price":"$1.60320","currency":"USD"},{"qty":100,"price":"$1.36600","currency":"USD"},{"qty":250,"price":"$1.28260","currency":"USD"},{"qty":500,"price":"$1.12228","currency":"USD"},{"qty":1000,"price":"$0.92988","currency":"USD"},{"qty":2500,"price":"$0.90750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2674413fcc5ec2acc104c53f9bbd67b8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to SN74AS27N in this Discrete Semiconductors family?","answer":"The 74AS family includes other triple 3-input gates (like the 74AS27) but no direct cross-reference is documented."},{"question":"What compliance documentation does Texas Instruments provide for SN74AS27N?","answer":"The SN74AS27N is ROHS3 compliant per Texas Instruments. No UL, IEC, or REACH documentation is listed in the product record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AS27N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AS27N 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}}