{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HCT21M","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HCT21M","canonicalUrl":"https://icboms.com/texas-instruments/CD74HCT21M","factsUrl":"https://icboms.com/api/mcp/products/CD74HCT21M","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series CD74HCT21M, dual 4-input AND gate, 14-SOIC surface-mount package, 4.5V to 5.5V supply, -55°C to 125°C operating temperature, 2 µA quiescent current, 27ns propagation delay at 4.5V/50pF.","salesMarkdown":"The CD74HCT21M is a dual 4-input AND gate from the 74HCT logic family, in a 14-SOIC surface-mount package. The 74HCT series uses TTL-compatible input thresholds (0.8V low, 2V high) while running on a 5V CMOS rail, making it a direct drop-in for 5V TTL legacy designs or mixed-logic boards that need CMOS output drive with TTL-level signaling. The 27ns max propagation delay at 4.5V and 50pF load is the timing spec to close in your bus-margin analysis — it's the worst-case delay across temperature and voltage, so your setup/hold budget needs to accommodate it. Quiescent current maxes at 2 µA, which keeps the power rail draw negligible in standby or battery-backed sections.","metaTitle":"CD74HCT21M 74HCT Dual 4-Input AND Gate, 14-SOIC","metaDescription":"CD74HCT21M is a dual 4-input AND gate in 74HCT logic, 14-SOIC package, rated -55°C to 125°C. 4.5V–5.5V supply, 2 µA quiescent, 27ns propagation delay.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"74HCT","Package":"Tube","Logic Type":"AND Gate","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Number of Inputs":"4","Voltage - Supply":"4.5V ~ 5.5V","Number of Circuits":"2","Operating Temperature":"-55°C ~ 125°C","Input Logic Level - Low":"0.8V","Supplier Device Package":"14-SOIC","Input Logic Level - High":"2V","Current - Quiescent (Max)":"2 µA","Current - Output High, Low":"4mA, 4mA","Max Propagation Delay @ V, Max CL":"27ns @ 4.5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.92","priceTiers":[{"qty":1,"price":"$0.92000","currency":"USD"},{"qty":10,"price":"$0.81900","currency":"USD"},{"qty":25,"price":"$0.77760","currency":"USD"},{"qty":100,"price":"$0.63880","currency":"USD"},{"qty":250,"price":"$0.59708","currency":"USD"},{"qty":500,"price":"$0.52766","currency":"USD"},{"qty":1000,"price":"$0.41658","currency":"USD"},{"qty":2500,"price":"$0.39300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b97f64aa148b715034608c9124b9474f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD74HCT21M/alternatives.json"},"ai":{"faq":[{"question":"Is CD74HCT21M obsolete?","answer":"No, the CD74HCT21M is listed as Active in production status. There is no indication of discontinuation or last-time-buy, so it remains a safe choice for both new designs and ongoing production."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HCT21M","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HCT21M 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}}