{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HC540NSR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HC540NSR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HC540NSR","factsUrl":"https://icboms.com/api/mcp/products/SN74HC540NSR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74HC series, SN74HC540NSR, Buffer, Inverting, 3-State, 2V ~ 6V supply, 1 element, 8 bits per element, 7.8mA output, -40°C ~ 85°C, Surface Mount 20-SOIC.","salesMarkdown":"## What this 74HC inverting buffer does on your board The SN74HC540NSR: It takes eight input signals and presents their inverted logic levels on the outputs, with a single output-enable (OE) pin that puts all outputs into a high-impedance state for bus isolation or shared-line arbitration. ## Output drive and bus isolation Each output sources or sinks 7.8 mA (symmetric high/low), which is typical for 74HC and enough to drive CMOS logic inputs, LEDs with a series resistor, or short PCB traces. The 3-state outputs let you disconnect the buffer from a shared data bus or backplane without adding external bus switches — a single OE pin controls all eight channels. ## Package and supply compatibility Housed in a 20-SOIC (0.209\", 5.30 mm width) surface-mount package. The 2V to 6V supply covers 3.3V and 5V rails without a level translator, and the 74HC family's CMOS inputs are 5V-tolerant at the higher supply end.","metaTitle":"SN74HC540NSR 74HC Inverting Buffer, 3-State, 20-SOIC","metaDescription":"Texas Instruments SN74HC540NSR 74HC series inverting buffer with 3-state outputs, 2V–6V supply, 7.8mA drive, -40°C to 85°C, 20-SOIC. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":"74HC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"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":"1","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":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.81","priceTiers":[{"qty":1,"price":"$0.81000","currency":"USD"},{"qty":10,"price":"$0.71400","currency":"USD"},{"qty":25,"price":"$0.67040","currency":"USD"},{"qty":100,"price":"$0.54710","currency":"USD"},{"qty":250,"price":"$0.50816","currency":"USD"},{"qty":500,"price":"$0.43248","currency":"USD"},{"qty":1000,"price":"$0.34598","currency":"USD"},{"qty":2000,"price":"$0.31355","currency":"USD"},{"qty":6000,"price":"$0.30600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cf2b1a640baf321fb0aee1e284a2c5f3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74HC540NSR/alternatives.json"},"ai":{"faq":[{"question":"What is the output configuration of SN74HC540NSR?","answer":"The SN74HC540NSR has 3-state outputs, meaning each output can be actively driven high or low, or set to a high-impedance state for bus isolation."},{"question":"Is SN74HC540NSR compatible with 5V logic?","answer":"Yes, the 2V to 6V supply range includes 5V, and the 74HC family inputs and outputs are rated for 5V operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HC540NSR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HC540NSR 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}}