{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCT240NSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCT240NSR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCT240NSR","factsUrl":"https://icboms.com/api/mcp/products/SN74HCT240NSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HCT series SN74HCT240NSR, Buffer, Inverting, 3-State Output, 4.5V ~ 5.5V supply, 2 elements x 4 bits, -40°C ~ 85°C, Surface Mount 20-SOIC (0.209\", 5.30mm Width).","salesMarkdown":"## What this 74HCT240 does on your board The Texas Instruments SN74HCT240NSR is a dual 4-bit inverting buffer and line driver with 3-state outputs, part of the 74HCT logic family. It operates from a 4.5 V to 5.5 V supply and is specified across the industrial temperature range of -40°C to 85°C. Each of the two elements handles four bits, with symmetrical 6 mA source and sink capability per output. The 3-state outputs let you connect multiple drivers to a shared bus without contention — a common requirement in memory address decoding, peripheral chip-select gating, and bidirectional data-path isolation. ## Package and footprint — 20-SOIC wide-body Housed in a 20-SOIC package with a 5.30 mm body width (0.209\"), the SN74HCT240NSR is a surface-mount device that reflows on a standard lead-free profile. The supplier device package is designated 20-SO. The 1.27 mm pin pitch is compatible with common SOIC footprints, but the wider body means the pad pattern differs from the narrower 20-SOIC (7.5 mm vs 5.3 mm width variants) — verify the land pattern against your PCB layout before committing the BOM. ## Lifecycle and compliance — active, ROHS3, no end-of-life risk For new designs or production replenishment, the part is available through independent distribution channels and is quoted to order against an RFQ. ## Sourcing reality — what to expect when you order Because the SN74HCT240NSR is an active, catalog-standard logic part, it is routinely stocked across multiple independent distributors.","metaTitle":"SN74HCT240NSR 74HCT Buffer, Inverting, 3-State, 20-SOIC","metaDescription":"TI SN74HCT240NSR octal inverting buffer/line driver with 3-state outputs, 4.5V-5.5V supply, -40°C to 85°C. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74HCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74HCT","Package":"Tape & Reel (TR); Cut Tape (CT)","Logic Type":"Buffer, Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"20-SOIC (0.209\\\", 5.30mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"2","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-SO","Current - Output High, Low":"6mA, 6mA","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.75","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.75000","currency":"USD"},{"qty":10,"price":"$0.65700","currency":"USD"},{"qty":25,"price":"$0.61680","currency":"USD"},{"qty":2000,"price":"$0.30587","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/33267559facf06b3c3fbadf4e8541d61.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional equivalent to SN74HCT240NSR?","answer":"The SN74LVTH16245ADGVR is a different logic family (74LVTH, 2.7 V to 3.6 V supply) and is a non-inverting transceiver, not an inverting buffer. For a direct inverting 5 V octal buffer, the SN74HC240NSR (the HC variant) is the closest functional sibling — same pinout and logic function, but HC has CMOS-level inputs while HCT is TTL-compatible. Verify the input threshold requirements of your design before substituting."},{"question":"Is SN74HCT240NSR RoHS compliant?","answer":"Yes, the SN74HCT240NSR is ROHS3 Compliant, meeting the latest EU Restriction of Hazardous Substances directive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCT240NSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCT240NSR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}