{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCS240RKSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCS240RKSR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCS240RKSR","factsUrl":"https://icboms.com/api/mcp/products/SN74HCS240RKSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74HCS240RKSR, octal inverting buffer/line driver, Schmitt-trigger inputs, 3-state outputs, 2V to 6V supply, -40°C to 125°C, 20-VQFN (2.5x4.5) exposed-pad package.","salesMarkdown":"The Texas Instruments SN74HCS240RKSR is an octal inverting buffer and line driver with Schmitt-trigger inputs and 3-state outputs. The Schmitt-trigger inputs provide hysteresis that cleans up slow edges or noisy signals, while the 3-state outputs allow the device to be used on shared data buses. If your BOM runs at 3.3V with a 5V-tolerant bus, this part handles both levels without a level translator — the Schmitt-trigger input thresholds track the supply rail. ## Output drive and bus interface Each output sources or sinks 7.8 mA, which is typical for driving CMOS logic inputs or short PCB traces. The 3-state outputs let you connect the eight channels to a shared data bus; the output enable control (active-low, per the inverting buffer function) puts all outputs into high-impedance state when asserted. For bus-oriented designs, the 3-state feature avoids contention when multiple drivers share the same lines. ## Package and layout — 20-VQFN with exposed pad The supplier device package is 20-VQFN (2.5x4.5).","metaTitle":"SN74HCS240RKSR Octal Buffer/Line Driver, 2V-6V","metaDescription":"TI SN74HCS240RKSR octal inverting buffer with Schmitt-trigger inputs, 3-state outputs. 2V-6V supply, -40°C to 125°C, 20-VQFN package. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"Schmitt Trigger","Logic Type":"Buffer, Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"20-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Number of Elements":"1","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"20-VQFN (2.5x4.5)","Current - Output High, Low":"7.8mA, 7.8mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.73","priceTiers":[{"qty":1,"price":"$0.73000","currency":"USD"},{"qty":10,"price":"$0.64000","currency":"USD"},{"qty":25,"price":"$0.60120","currency":"USD"},{"qty":100,"price":"$0.49080","currency":"USD"},{"qty":250,"price":"$0.45584","currency":"USD"},{"qty":500,"price":"$0.38796","currency":"USD"},{"qty":1000,"price":"$0.31037","currency":"USD"},{"qty":3000,"price":"$0.28127","currency":"USD"},{"qty":6000,"price":"$0.27450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ebb8e6d1fea95d5fbaf0b5e2b87801c0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74HCS240RKSR/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCS240RKSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCS240RKSR 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}}