{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"74LS21PC","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"74LS21PC","canonicalUrl":"https://icboms.com/texas-instruments/74LS21PC","factsUrl":"https://icboms.com/api/mcp/products/74LS21PC","rawCanonicalId":null},"summary":{"shortDescription":"74LS21PC, AND Gate, TTL, PDIP14, Bulk package, Active lifecycle, RoHS non-compliant.","salesMarkdown":"This is a standard catalog item for through-hole TTL logic, so supply continuity is predictable through the independent distribution channel. The part is RoHS non-compliant, which is typical for legacy TTL devices — verify your assembly's exemption status before ordering. ## Package and fit The PDIP14 package is a 14-pin dual in-line footprint for through-hole soldering.","metaTitle":"74LS21PC AND Gate, TTL, PDIP14, Active","metaDescription":"74LS21PC AND gate, TTL logic, PDIP14 package. Active lifecycle, RoHS non-compliant.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.22","priceTiers":[{"qty":1374,"price":"$0.22000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9bb64d46e071f19b4401c3b2a601f523.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/74LS21PC/alternatives.json"},"ai":{"faq":[{"question":"Can I replace 74LS21PC with a 74HC21?","answer":"A 74HC21 is a CMOS equivalent with a different supply voltage range and input thresholds. The 74LS21PC is TTL logic with a nominal 5 V supply and TTL-compatible input levels. Direct replacement requires verifying the system's supply voltage and logic-level compatibility; the 74HC21 operates from 2 V to 6 V but has CMOS thresholds. For a drop-in TTL replacement, stay within the 74LS family."},{"question":"What are the electrical characteristics of 74LS21PC?","answer":"The 74LS21PC is a standard 74LS TTL AND gate. Key characteristics include a nominal supply voltage of 5 V, TTL input thresholds (low ≤ 0.8 V, high ≥ 2.0 V), and typical propagation delay around 10 ns. Detailed electrical specifications are provided in the 74LS21 datasheet."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/74LS21PC","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/74LS21PC 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}}