{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"74HCT4040D/AU118","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"74HCT4040D-AU118","canonicalUrl":"https://icboms.com/nxp/74HCT4040D-AU118","factsUrl":"https://icboms.com/api/mcp/products/74HCT4040D%2FAU118","rawCanonicalId":null},"summary":{"shortDescription":"NXP Semiconductors 74HCT series, 74HCT4040D/AU118 12-stage binary counter, 79 MHz count rate, 4.5 V to 5.5 V supply, -40°C to +125°C, 16-SOIC package, Bulk.","salesMarkdown":"## 12-bit ripple counter with 79 MHz clock ceiling The 74HCT4040D/AU118 is a 12-stage binary ripple counter from NXP's 74HCT family. It counts up on the negative edge of the clock input, with a maximum count rate of 79 MHz — meaning the internal flip-flop chain toggles reliably at that frequency, and the Q12 output transitions at 79 MHz ÷ 2^12 ≈ 19.3 kHz, giving a usable division ratio for timing or frequency synthesis. An asynchronous reset (active high) clears all 12 bits immediately, independent of the clock state — useful for initializing the counter to zero before a measurement cycle or for synchronizing multiple counters on the same board. ## Supply and temperature envelope for industrial logic Packaged in a 16-SOIC with 3.90 mm body width (supplier package 16-SO). The 1.27 mm pin pitch is layout-friendly — two-layer boards handle the fan-out without vias, and the body size fits standard SOIC-16 footprints.","metaTitle":"NXP 74HCT4040D/AU118 12-Stage Binary Counter, 79 MHz","metaDescription":"NXP 74HCT4040D/AU118 12-bit binary counter, 79 MHz count rate, 4.5-5.5 V supply, -40 to +125°C. Active production. Order via RFQ.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Reset":"Asynchronous","Series":"74HCT","Package":"Bulk","Direction":"Up","Count Rate":"79 MHz","Logic Type":"Binary Counter","Trigger Type":"Negative Edge","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5 V ~ 5.5 V","Number of Elements":"1","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"16-SO","Number of Bits per Element":"12"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.29","stockQuantity":28,"priceTiers":[{"qty":1031,"price":"$0.29000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0e226bdc285c215f2051f784268ee078.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the count rate of the 74HCT4040D/AU118?","answer":"The maximum count rate is 79 MHz. This is the clock input frequency at which the internal flip-flop chain reliably toggles; the Q12 output transitions at 79 MHz ÷ 4096 ≈ 19.3 kHz."},{"question":"Does the 74HCT4040D/AU118 have an asynchronous reset?","answer":"Yes, the reset is asynchronous (active high). Asserting the reset pin clears all 12 bits immediately, regardless of the clock state."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/74HCT4040D-AU118","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/74HCT4040D-AU118 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}