{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HCT02E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HCT02E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HCT02E","factsUrl":"https://icboms.com/api/mcp/products/CD74HCT02E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series NOR Gate, CD74HCT02E, 4 circuits, 2-input, 14-DIP (0.300\", 7.62mm), Through Hole, Tube.","salesMarkdown":"## What this 74HCT quad NOR gate is for The CD74HCT02E is a quad 2-input NOR gate from the 74HCT series — four independent gates in a single 14-pin DIP package, each with two inputs. It implements the NOR logic function (output high only when both inputs are low) and is a direct drop-in for TTL-compatible 5 V logic systems. ## Supply range and temperature grade Operates from 4.5 V to 5.5 V, which covers the standard 5 V logic rail with margin for regulation tolerance. The -55°C to 125°C temperature range is the full military-grade span — this gate works in an engine bay, a cold-storage warehouse, or a satellite payload without derating. Input logic thresholds are set for TTL compatibility: a low level below 0.8 V is guaranteed to be seen as a logic 0, and a high level above 2 V is seen as a logic 1. This means it interfaces directly with 5 V TTL outputs without a level translator. ## Speed and drive capability Maximum propagation delay is 21 ns at 4.5 V with a 50 pF load — fast enough for most 5 V logic buses running below 20 MHz. The output can source or sink 4 mA, which is sufficient to drive one or two standard TTL loads or an LED through a current-limiting resistor. Quiescent current is just 2 µA max — the gate draws almost nothing when the outputs are static, making it suitable for battery-backed or power-sensitive boards where the logic sits idle most of the time. ## Package and field-fit Housed in a 14-lead PDIP (0.300-inch body width, 7.62 mm row spacing) — the classic through-hole DIP that fits standard breadboards, protoboards, and socketed production boards. The 0.100-inch pin pitch is easy to hand-wire or rework with a basic soldering iron; no hot-air station needed. Shipped in a tube — the tubes protect the leads during handling and are compatible with automatic tube feeders on through-hole insertion machines.","metaTitle":"CD74HCT02E 74HCT Quad 2-Input NOR Gate, 14-DIP, Through Hole","metaDescription":"CD74HCT02E quad 2-input NOR gate in 14-DIP, 4.5V-5.5V supply, -55°C to 125°C range. Active production, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"74HCT","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":"4.5V ~ 5.5V","Number of Circuits":"4","Operating Temperature":"-55°C ~ 125°C","Input Logic Level - Low":"0.8V","Supplier Device Package":"14-PDIP","Input Logic Level - High":"2V","Current - Quiescent (Max)":"2 µA","Current - Output High, Low":"4mA, 4mA","Max Propagation Delay @ V, Max CL":"21ns @ 4.5V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.66","priceTiers":[{"qty":1,"price":"$0.66000","currency":"USD"},{"qty":10,"price":"$0.56800","currency":"USD"},{"qty":25,"price":"$0.53040","currency":"USD"},{"qty":100,"price":"$0.42440","currency":"USD"},{"qty":250,"price":"$0.39412","currency":"USD"},{"qty":500,"price":"$0.33348","currency":"USD"},{"qty":1000,"price":"$0.25769","currency":"USD"},{"qty":2500,"price":"$0.23495","currency":"USD"},{"qty":5000,"price":"$0.21979","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b9dd81f2f2fc0e9e5f8d3ac82cd3cdab.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD74HCT02E/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for the CD74HCT02E?","answer":"The SN74HC27APWR is a triple 3-input NOR gate from the 74HC series, but it is not a pin-for-pin replacement — it has three gates instead of four, and each gate has three inputs instead of two. The SN74HC27APWR also uses surface-mount packaging (TSSOP) and operates over a -40°C to 85°C range, not the full -55°C to 125°C of the CD74HCT02E. A board redesign would be required to swap between them."},{"question":"What compliance documentation is available for the CD74HCT02E?","answer":"The CD74HCT02E is ROHS3 compliant, meaning it meets the EU RoHS directive without any exempted substances. Standard Texas Instruments documentation includes the datasheet, RoHS certificate of compliance, and material declaration."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HCT02E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HCT02E 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}}