{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HC240NSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HC240NSR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HC240NSR","factsUrl":"https://icboms.com/api/mcp/products/SN74HC240NSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series Buffer, Inverting, 3-State, 20-SOIC (0.209\", 5.30mm Width), 2V ~ 6V supply, 7.8mA output high/low, -40°C ~ 85°C, SN74HC240NSR.","salesMarkdown":"## What the 74HC240 does that the 74HC241 does not The SN74HC240NSR is an inverting buffer with 3-state outputs — meaning the output is the opposite of the input when enabled, and goes high-impedance when the output-enable pin is pulled high. The non-inverting sibling, the 74HC241, passes the signal through unchanged. If your bus needs a polarity flip and isolation, this is the one; if you just need a repeater, grab the 241. It packs two elements of four bits each, giving you eight inverting channels in one 20-SOIC package. The 3-state outputs let multiple devices share a bus line — pull the output-enable high and the pin stops driving, so another device can take over without contention. ## Supply voltage and output drive — what it means on the bench Runs on 2 V to 6 V, which covers the common 3.3 V and 5 V logic rails without needing a separate level translator. The 7.8 mA output current high and low is typical for the 74HC family — enough to drive a few CMOS inputs or a low-current LED, but not a relay or a long cable. If you need more drive, the 74HCT or 74ACT series would be the next step up. The -40°C to 85°C operating temperature range is the standard industrial grade. It will work in a heated factory floor or an outdoor enclosure that does not see direct sun; for under-hood or downhole applications, you would want the -55°C to 125°C military range. ## Lifecycle and sourcing — still a current part The 20-SOIC package is a standard footprint, so it is widely stocked across the supply chain.","metaTitle":"SN74HC240NSR 74HC Inverting Buffer, 3-State, 20-SOIC","metaDescription":"Texas Instruments SN74HC240NSR 74HC inverting buffer with 3-state outputs, 2-6V supply, 7.8mA output, -40 to 85°C, 20-SOIC. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Memory (DRAM / SRAM / Flash / EEPROM)"],"specifications":{"Series":"74HC","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":"2V ~ 6V","Number of Elements":"2","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-SO","Current - Output High, Low":"7.8mA, 7.8mA","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.78","priceTiers":[{"qty":1,"price":"$0.78000","currency":"USD"},{"qty":10,"price":"$0.68600","currency":"USD"},{"qty":25,"price":"$0.64400","currency":"USD"},{"qty":100,"price":"$0.52560","currency":"USD"},{"qty":250,"price":"$0.48824","currency":"USD"},{"qty":500,"price":"$0.41552","currency":"USD"},{"qty":1000,"price":"$0.33242","currency":"USD"},{"qty":2000,"price":"$0.30125","currency":"USD"},{"qty":6000,"price":"$0.29400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0dae3e5cc0ee3822560cb0e18ba9a8d5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74HC240NSR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between SN74HC240NSR and SN74HC241NSR?","answer":"The 240 is an inverting buffer (output is the opposite of the input), while the 241 is non-inverting. Both have 3-state outputs and the same pinout otherwise."},{"question":"What is the output current capability of SN74HC240NSR?","answer":"7.8 mA for both output high and low — typical for the 74HC family, enough for CMOS inputs or low-current loads."},{"question":"Is SN74HC240NSR RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meeting the latest EU RoHS restrictions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HC240NSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HC240NSR 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}}