{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CD74HCT161E","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CD74HCT161E","canonicalUrl":"https://icboms.com/texas-instruments/CD74HCT161E","factsUrl":"https://icboms.com/api/mcp/products/CD74HCT161E","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series 4-bit binary counter, CD74HCT161E, synchronous timing, 20 MHz count rate, asynchronous reset, negative-edge trigger, 16-DIP through-hole package.","salesMarkdown":"## 20 MHz synchronous binary counter with asynchronous reset The CD74HCT161E is a 4-bit binary counter from the 74HCT series, clocked at a 20 MHz count rate with synchronous timing — all four bits update on the same negative clock edge, eliminating ripple skew across the outputs. The asynchronous reset clears the counter to zero independent of the clock state, useful for power-on initialization or immediate reset without waiting for a clock edge. ## Military temperature range and through-hole package Housed in a 16-pin DIP with 0.300-inch (7.62 mm) body width, the through-hole package mates with standard DIP sockets or can be hand-soldered into a PCB — no reflow profile needed. ## Active lifecycle and compliance ROHS3 compliant — no restricted substance exemptions expiring, which simplifies compliance for EU-market equipment and avoids the need for an exemption review during the product lifecycle.","metaTitle":"CD74HCT161E 4-bit binary counter, 20 MHz, 16-DIP","metaDescription":"Texas Instruments CD74HCT161E 4-bit synchronous binary counter, 20 MHz count rate, asynchronous reset, -55°C to 125°C, 16-PDIP.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Reset":"Asynchronous","Series":"74HCT","Timing":"Synchronous","Package":"Tube","Direction":"Up","Count Rate":"20 MHz","Logic Type":"Binary Counter","Trigger Type":"Negative Edge","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5 V ~ 5.5 V","Number of Elements":"1","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"16-PDIP","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.62","priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.54200","currency":"USD"},{"qty":25,"price":"$0.50920","currency":"USD"},{"qty":100,"price":"$0.41570","currency":"USD"},{"qty":250,"price":"$0.38612","currency":"USD"},{"qty":500,"price":"$0.32860","currency":"USD"},{"qty":1000,"price":"$0.26288","currency":"USD"},{"qty":2500,"price":"$0.23824","currency":"USD"},{"qty":5000,"price":"$0.23250","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/23ac41c3589b9d66672da0822024d1fb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CD74HCT161E/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to CD74HCT161E?","answer":"The CD74HCT390E is also a 74HCT-series counter, but it is a dual decade counter (two independent 4-bit decade counters) rather than a single 4-bit binary counter. The CD74HCT161E counts binary 0-15; the CD74HCT390E counts 0-9 per section. They are not pin-compatible or direct replacements — a board redesign would be required to swap between them."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CD74HCT161E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CD74HCT161E 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}}