{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74AC02E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74AC02E","canonicalUrl":"https://icboms.com/texas-instruments/CD74AC02E","factsUrl":"https://icboms.com/api/mcp/products/CD74AC02E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments CD74AC02E, 74AC series, Quad 2-Input NOR Gate, Through Hole, 14-DIP (0.300\", 7.62mm), 1.5V–5.5V supply, –55°C to 125°C, 24mA output drive, 11.5ns @ 5V/50pF.","salesMarkdown":"## What this NOR gate brings to the board The CD74AC02E is a quad 2-input NOR gate from TI's 74AC family — four independent gates in a single 14-pin DIP package. It operates over a wide 1.5 V to 5.5 V supply range and is specified across the full military temperature range of –55°C to 125°C, making it a fit for avionics, satellite, or downhole instrumentation where the environment pushes beyond industrial limits. Each gate can source or sink 24 mA, enough to drive a standard TTL load or a small LED indicator directly. The propagation delay is 11.5 ns at 5 V with a 50 pF load, which keeps the timing budget tight for 50–80 MHz clocked logic without needing faster (and more power-hungry) AC or ACT families. Quiescent current is just 4 µA maximum, so the static power contribution in a battery-powered or energy-harvesting design is negligible. The input logic levels are specified relative to the supply rail — low from 0.3 V to 1.65 V, high from 1.2 V to 3.85 V — which means it interprets CMOS-level signals cleanly across the supply range. ## Supply voltage and temperature — where it works Rated from 1.5 V to 5.5 V, this gate can run on a single lithium cell (nominal 3.0 V–3.6 V) or on a regulated 5 V rail. Storage temperature exceeds the operating range — that limit governs handling, not running. No immediate LTB risk.","metaTitle":"CD74AC02E NOR Gate, 74AC, 4 Circuit, 2-Input, 14-DIP","metaDescription":"CD74AC02E quad 2-input NOR gate, 74AC series, 1.5V–5.5V supply, –55°C to 125°C, 24mA output drive, 11.5ns prop delay. Active, ROHS3. Available to order.","metaKeywords":null},"attributes":{"series":"74AC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"74AC","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":"2","Voltage - Supply":"1.5V ~ 5.5V","Number of Circuits":"4","Operating Temperature":"-55°C ~ 125°C","Input Logic Level - Low":"0.3V ~ 1.65V","Supplier Device Package":"14-PDIP","Input Logic Level - High":"1.2V ~ 3.85V","Current - Quiescent (Max)":"4 µA","Current - Output High, Low":"24mA, 24mA","Max Propagation Delay @ V, Max CL":"11.5ns @ 5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.86","priceTiers":[{"qty":1,"price":"$0.86000","currency":"USD"},{"qty":10,"price":"$0.75600","currency":"USD"},{"qty":25,"price":"$0.70960","currency":"USD"},{"qty":100,"price":"$0.57930","currency":"USD"},{"qty":250,"price":"$0.53804","currency":"USD"},{"qty":500,"price":"$0.45792","currency":"USD"},{"qty":1000,"price":"$0.36634","currency":"USD"},{"qty":2500,"price":"$0.33199","currency":"USD"},{"qty":5000,"price":"$0.32400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6625386ca3a8c843eb67cd7bd984e1fb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD74AC02E/alternatives.json"},"ai":{"faq":[{"question":"What supply voltage and temperature range does CD74AC02E support?","answer":"The supply range is 1.5 V to 5.5 V, and the operating temperature range is –55°C to 125°C."},{"question":"Does CD74AC02E have a direct replacement or equivalent?","answer":"No official second-source or pin-compatible alternate is listed in the sourcing record. For a same-function alternative within the 74AC family, a pin-compatible quad NOR gate from another manufacturer would need to be verified against the 14-DIP footprint and the AC logic-level thresholds."},{"question":"What is the difference between CD74AC02E and 74HC02?","answer":"The 74AC family offers higher output drive (24 mA vs typically 4 mA for HC) and faster propagation delay (11.5 ns vs ~15–20 ns for HC at 5 V), but draws slightly higher dynamic current per gate. The HC family operates over a wider supply range (2 V–6 V) and is more common in legacy 5 V designs. Both are available in 14-DIP. The choice depends on whether the design needs the speed/ drive of AC or the lower dynamic power of HC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74AC02E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74AC02E 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}}