{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AM25LS2569/BRA","brand":"AMD (Xilinx)","brandSlug":"amd-xilinx","productSlug":"AM25LS2569-BRA","canonicalUrl":"https://icboms.com/amd-xilinx/AM25LS2569-BRA","factsUrl":"https://icboms.com/api/mcp/products/AM25LS2569%2FBRA","rawCanonicalId":null},"summary":{"shortDescription":"AMD AM25LS2569/BRA, 4-bit synchronous binary counter, 18 MHz count rate, positive edge triggered, asynchronous reset, 4.75 V ~ 5.25 V supply, -55°C ~ 125°C, 20-DIP through hole, RoHS non-compliant.","salesMarkdown":"The AMD AM25LS2569/BRA is a 4-bit synchronous binary counter in a 20-pin DIP package, designed for up/down counting with positive-edge triggering and an asynchronous reset. It operates from a 4.75 V to 5.25 V supply and is rated across the full military temperature range of -55°C to 125°C, making it suitable for avionics, missile guidance, and other high-reliability systems where a hardened logic part is specified. ## 18 MHz count rate — what it means for the bus The 18 MHz count rate sets the maximum input frequency the counter can reliably track. In a timing or frequency-division application, this means the input clock period must stay above roughly 55 ns to avoid missing edges. For a 5V TTL system, that is a comfortable margin for most backplane or peripheral buses, but it does limit use in high-speed serial or gigabit-class designs. ## Supply and temperature grade The 4.75 V to 5.25 V supply range is standard 5V TTL logic. The -55°C to 125°C operating range is the military-grade temperature span. ## Package and mounting Supplied in a 20-pin PDIP (20-DIP) with through-hole mounting. Bulk packaging means the parts ship in tubes or loose.","metaTitle":"AM25LS2569/BRA Binary Counter, 18 MHz, 4-Bit, 20-PDIP","metaDescription":"AM25LS2569/BRA 4-bit synchronous up/down binary counter from AMD. 18 MHz count rate, 4.75-5.25V supply, -55°C to 125°C. Active, RoHS non-compliant. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Reset":"Asynchronous","Timing":"Synchronous","Package":"Bulk","Direction":"Up, Down","Count Rate":"18 MHz","Logic Type":"Binary Counter","Trigger Type":"Positive Edge","Mounting Type":"Through Hole","Package / Case":"20-DIP","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75 V ~ 5.25 V","Number of Elements":"1","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"20-PDIP","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.33","stockQuantity":0,"priceTiers":[{"qty":27,"price":"$11.33000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3ae66e00ccadb77dbe27cdc78ff6089c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the operating voltage of AM25LS2569/BRA?","answer":"The supply voltage range is 4.75 V to 5.25 V, standard 5V TTL logic."},{"question":"What is the count rate of AM25LS2569/BRA?","answer":"The maximum count rate is 18 MHz."},{"question":"Is AM25LS2569/BRA compatible with 5V logic?","answer":"Yes, the 4.75 V to 5.25 V supply range is directly compatible with 5V TTL and CMOS logic families."},{"question":"What is AM25LS2569/BRA's listed reset?","answer":"The reset is asynchronous — it clears the counter immediately regardless of the clock state."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/amd-xilinx/AM25LS2569-BRA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/amd-xilinx/AM25LS2569-BRA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T19:20:43.545Z","lastPublished":"2026-07-11T19:20:43.545Z","indexable":true}}