{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74ALS21AN","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74ALS21AN","canonicalUrl":"https://icboms.com/texas-instruments/SN74ALS21AN","factsUrl":"https://icboms.com/api/mcp/products/SN74ALS21AN","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74ALS series, SN74ALS21AN, dual 4-input AND gate, 14-DIP (0.300\", 7.62mm), through hole, 4.5V~5.5V supply, 15ns @ 5V, 50pF max propagation delay, 0°C~70°C operating temperature.","salesMarkdown":"## What this 74ALS AND gate is and where it fits The Texas Instruments SN74ALS21AN is a dual 4-input AND gate from the 74ALS family, in a 14-pin DIP package for through-hole mounting. It takes two independent 4-input AND functions on one chip, each with its own output. The 74ALS series balances speed and power — this part delivers a 15ns propagation delay at 5V with a 50pF load, making it a solid choice for 5V bus logic where you need clean AND gating without the higher shoot-through current of older TTL families. Typical applications include address decoding, control logic, and general-purpose combinatorial gating in industrial controllers, telecom line cards, and test equipment that still run on a 5V rail. ## Lifecycle and sourcing reality That means you can qualify it into a new BOM without worrying about imminent obsolescence. No stock or price figures here, but an RFQ will get you a firm line.","metaTitle":"SN74ALS21AN 74ALS Dual 4-Input AND Gate, 15ns @ 5V, 14-DIP","metaDescription":"TI SN74ALS21AN dual 4-input AND gate in 14-DIP. 4.5V-5.5V supply, 15ns propagation delay at 5V, 50pF. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":"74ALS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74ALS","Package":"Tube","Logic Type":"AND Gate","Mounting Type":"Through Hole","Package / Case":"14-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Number of Inputs":"4","Voltage - Supply":"4.5V ~ 5.5V","Number of Circuits":"2","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":"400µA, 8mA","Max Propagation Delay @ V, Max CL":"15ns @ 5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.20000","currency":"USD"},{"qty":10,"price":"$1.07600","currency":"USD"},{"qty":25,"price":"$1.02080","currency":"USD"},{"qty":100,"price":"$0.83870","currency":"USD"},{"qty":250,"price":"$0.78396","currency":"USD"},{"qty":500,"price":"$0.69282","currency":"USD"},{"qty":1000,"price":"$0.54696","currency":"USD"},{"qty":2500,"price":"$0.51600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/68c3a913ae1f12fb0b56a46bbe4eae01.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is SN74ALS21AN compatible with 5V logic levels?","answer":"Yes, it operates on a 4.5V to 5.5V supply with TTL-compatible input thresholds (0.8V low, 2V high), making it fully compatible with 5V logic systems."},{"question":"What is the typical propagation delay of SN74ALS21AN?","answer":"The maximum propagation delay is 15ns at 5V with a 50pF load. Actual typical delay is lower, but the 15ns max is the timing budget number to use for worst-case analysis."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74ALS21AN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74ALS21AN 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}}