{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN54S240/BRA","brand":"AMD (Xilinx)","brandSlug":"amd-xilinx","productSlug":"SN54S240-BRA","canonicalUrl":"https://icboms.com/amd-xilinx/SN54S240-BRA","factsUrl":"https://icboms.com/api/mcp/products/SN54S240%2FBRA","rawCanonicalId":null},"summary":{"shortDescription":"SN54S240/BRA — Buffer, Inverting, Dual 4-bit, 3-State Output, 20-CDIP (0.300\", 7.62mm), Through Hole, 4.5V~5.5V Supply, -55°C~125°C, 15mA/48mA Output Current.","salesMarkdown":"## What this part is and where it fits The SN54S240/BRA is a dual 4-bit inverting buffer with 3-state outputs from the 54S Schottky TTL logic family. It sits in a 20-pin ceramic DIP (20-CDIP) and operates over the full military temperature range of -55°C to 125°C. This part is designed for bus-oriented systems where signal inversion and output disable are needed — think memory address buffers, data bus isolators, or control signal fan-out in avionics, missile guidance, satellite payloads, and other high-reliability environments that demand hermetic packaging and wide-temperature tolerance. ## Temperature grade and environment Rated for -55°C to 125°C, this is the full military temperature grade. It's the right choice for avionics, missile guidance, satellite, and downhole equipment where the board sees extreme thermal cycling. The ceramic package keeps the die sealed and the leads are tin/lead plated — RoHS non-compliant, which is expected for this class and often required for military contracts that exempt lead-bearing finishes.","metaTitle":"SN54S240/BRA Buffer, Inverting 3-State 20-CDIP, Military Temp","metaDescription":"SN54S240/BRA dual 4-bit inverting buffer with 3-state outputs. 20-CDIP ceramic package, -55°C to 125°C. Active lifecycle, RoHS non-compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Bulk","Logic Type":"Buffer, Inverting","Output Type":"3-State","Mounting Type":"Through Hole","Package / Case":"20-CDIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"2","Operating Temperature":"-55°C ~ 125°C","Supplier Device Package":"20-CDIP","Current - Output High, Low":"15mA, 48mA","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.59","stockQuantity":0,"priceTiers":[{"qty":46,"price":"$6.59000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b8da5960ee7aa3e7c046b49728e7a9d6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does SN54S240/BRA have 3-state outputs?","answer":"Yes, the outputs are 3-state — they can be driven high, low, or placed in a high-impedance state to disconnect from the bus."},{"question":"What is the difference between SN54S240 and SN74S240?","answer":"The SN54 prefix denotes military temperature range (-55°C to 125°C) and ceramic hermetic packaging; the SN74 prefix is commercial/industrial grade (0°C to 70°C) in plastic packages. The SN74S240 is RoHS-compliant; the SN54S240/BRA is not."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/amd-xilinx/SN54S240-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/SN54S240-BRA when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T19:44:09.272Z","lastPublished":"2026-07-11T19:44:09.272Z","indexable":true}}