{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HC688E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HC688E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HC688E","factsUrl":"https://icboms.com/api/mcp/products/CD74HC688E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series, CD74HC688E, 8-bit identity comparator, active-low output, 20-DIP through-hole, 2V to 6V supply, -55°C to 125°C, 29ns propagation delay at 6V.","salesMarkdown":"## 8-bit identity comparator for board-level match detection The CD74HC688E is an 8-bit identity comparator from the 74HC series. It compares two 8-bit words and asserts the output low when they match. ## 29 ns propagation delay — timing margin in fast buses Max propagation delay is 29 ns at 6V with a 50 pF load. Quiescent current is 8 µA. ## Through-hole DIP package — legacy board fit The 20-pin DIP package (0.300\" body, 7.62 mm pitch) is a through-hole footprint common in industrial control cards, prototyping boards, and retrofit repairs. It sits in a 20-PDIP socket or solders directly into plated through-holes. ## Active production — no obsolescence risk The CD74HC688E is listed as Active with ROHS3 compliance. No end-of-life notice or last-time-buy window is in effect.","metaTitle":"CD74HC688E Identity Comparator, 8-Bit, Active Low, 20-DIP","metaDescription":"CD74HC688E 8-bit identity comparator from the 74HC series. Active-low output, 2V-6V supply, 29ns propagation delay.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Identity Comparator","Output":"Active Low","Series":"74HC","Package":"Tube","Mounting Type":"Through Hole","Number of Bits":"8","Package / Case":"20-DIP (0.300\\\", 7.62mm)","Output Function":"A=B","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"20-PDIP","Current - Quiescent (Iq)":"8 µA","Current - Output High, Low":"5.2mA, 5.2mA","Max Propagation Delay @ V, Max CL":"29ns @ 6V, 50pF"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.02","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.02000","currency":"USD"},{"qty":10,"price":"$1.81500","currency":"USD"},{"qty":25,"price":"$1.71200","currency":"USD"},{"qty":100,"price":"$1.45850","currency":"USD"},{"qty":250,"price":"$1.36952","currency":"USD"},{"qty":500,"price":"$1.19832","currency":"USD"},{"qty":1000,"price":"$0.99290","currency":"USD"},{"qty":2500,"price":"$0.96900","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/86ec3dfe4fd903e5bee3dcd9d6413630.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HC688E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HC688E when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}