{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"74HC390PW,112","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"74HC390PW112","canonicalUrl":"https://icboms.com/nxp/74HC390PW112","factsUrl":"https://icboms.com/api/mcp/products/74HC390PW%2C112","rawCanonicalId":null},"summary":{"shortDescription":"NXP 74HC390PW,112 dual decade ripple counter, 71 MHz max count rate, 2 V to 6 V supply, negative-edge triggered, asynchronous reset, 16-TSSOP package, -40°C to 125°C operating temperature.","salesMarkdown":"## What this dual decade ripple counter does The NXP 74HC390PW,112 is a dual decade ripple counter in the 74HC family, containing two independent 4-bit decade counters per package. Each counter counts down on the negative edge of the clock input, with an asynchronous master reset that clears all outputs to zero. The 71 MHz maximum count rate sets the upper limit for frequency division and event counting in your timing chain. At 71 MHz, this counter can divide a 71 MHz clock down to 7.1 MHz (decade division) or lower with cascaded stages. For a 50 MHz system clock, you have 21 MHz of headroom before the counter misses edges — useful for frequency synthesis, time-base generation, or event counting in high-speed industrial encoders. The negative-edge trigger means the counter advances on the falling edge, which affects setup/hold timing relative to other logic in the same clock domain. ## Package and footprint fit The 16-TSSOP body is 4.40 mm wide with a 0.65 mm lead pitch. This is a standard TSSOP-16 footprint; the same land pattern accepts 74HC393 or 74HC161 variants in the same package, simplifying PCB reuse. No exposed pad — all dissipation goes through the leads, so keep the ambient below 125°C for the full 71 MHz operation. ## Lifecycle and compliance The 74HC series is a mature logic family with broad second-source availability — TI, ON Semiconductor, and others offer functionally equivalent parts in the same TSSOP-16 footprint.","metaTitle":"74HC390PW,112 Dual Decade Ripple Counter, 71 MHz, 16-TSSOP","metaDescription":"74HC390PW,112 dual decade ripple counter from NXP, 71 MHz count rate, 2 V to 6 V supply, -40°C to 125°C, 16-TSSOP. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Reset":"Asynchronous","Series":"74HC","Package":"Bulk","Direction":"Up","Count Rate":"71 MHz","Logic Type":"Counter, Decade","Trigger Type":"Negative Edge","Mounting Type":"Surface Mount","Package / Case":"16-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2 V ~ 6 V","Number of Elements":"2","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"16-TSSOP","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.24","stockQuantity":0,"priceTiers":[{"qty":1227,"price":"$0.24000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3de45a4f89e55bf939f72db83c5161c5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between 74HC390 and 74HC393?","answer":"The 74HC390 is a dual decade counter (divide-by-10 per section), while the 74HC393 is a dual 4-bit binary counter (divide-by-16 per section). Both are in the 74HC family, share the same 2 V to 6 V supply range, and are available in similar packages. The choice depends on whether you need decimal or binary division."},{"question":"Can I replace a failed 74HC390PW,112 with SN74HC390?","answer":"Yes, the SN74HC390 from TI is a functional equivalent in the same 74HC family, with the same pinout and logic function. Verify the package variant — the SN74HC390 is available in TSSOP-16 (PW suffix) as well. Always confirm the supply voltage and temperature grade match your application."},{"question":"What is the maximum clock frequency for 74HC390?","answer":"The maximum count rate is 71 MHz. This is the guaranteed limit across the full supply range and temperature range."},{"question":"Is 74HC390PW,112 lead-free and RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meaning it meets the Restriction of Hazardous Substances directive including the exemption for lead in solder."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/74HC390PW112","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/74HC390PW112 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T11:37:12.519Z","lastPublished":"2026-07-16T11:37:12.519Z","indexable":true}}