{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74AHCT540PW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74AHCT540PW","canonicalUrl":"https://icboms.com/texas-instruments/SN74AHCT540PW","factsUrl":"https://icboms.com/api/mcp/products/SN74AHCT540PW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74AHCT series SN74AHCT540PW, Buffer, Inverting, 3-State output, 8-bit per element, 1 element, 4.5V~5.5V supply, -40°C to 125°C, 20-TSSOP, Surface Mount.","salesMarkdown":"## Inverting buffer with 3-state outputs — the 74AHCT540 in 20-TSSOP The Texas Instruments SN74AHCT540PW is an 8-bit inverting buffer with 3-state outputs from the 74AHCT logic family. It takes a single 4.5V to 5.5V supply rail and delivers 8 mA source and 8 mA sink per output. The inverting path means a logic-high input produces a logic-low output and vice versa — this is the key functional distinction from a non-inverting buffer like the 74AHCT541. The 3-state outputs let you disconnect the bus by pulling the output-enable pin high, which is standard for shared data lines. ## -40°C to 125°C — industrial and automotive cabin use The SN74AHCT540PW is rated over the full -40°C to 125°C ambient temperature range, which covers industrial motor drives, outdoor telecom cabinets, and automotive cabin electronics. That is a wider span than the 0°C to 70°C commercial-grade parts like the SN74LS645-1N, and it also exceeds the -40°C to 85°C range of the SN74ABT2245DW and SN74LVTH16245ADGVR. If your BOM calls for a 5V inverting buffer that must hold timing across a hot engine bay or a factory floor, this temperature grade is the deciding spec. ## Active lifecycle — no LTB risk for new designs The SN74AHCT540PW carries an Active product status with ROHS3 compliance. For a procurement desk qualifying a production BOM, this means you can design it in today without scheduling a future respin for obsolescence. The 20-TSSOP footprint is a standard 4.40mm-wide body, shared across the 74AHCT540 family, so a shift to the non-inverting variant or a different supply voltage tier keeps the same board layout.","metaTitle":"SN74AHCT540PW Buffer, Inverting 3-State 20-TSSOP - TI 74AHCT","metaDescription":"TI SN74AHCT540PW inverting buffer with 3-state outputs, 4.5V–5.5V supply, -40°C to 125°C range, 20-TSSOP. Active production.","metaKeywords":null},"attributes":{"series":"74AHCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74AHCT","Package":"Tube","Logic Type":"Buffer, Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Number of Elements":"1","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"20-TSSOP","Current - Output High, Low":"8mA, 8mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.32","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.32000","currency":"USD"},{"qty":10,"price":"$1.17600","currency":"USD"},{"qty":25,"price":"$1.11600","currency":"USD"},{"qty":100,"price":"$0.91670","currency":"USD"},{"qty":250,"price":"$0.85692","currency":"USD"},{"qty":500,"price":"$0.75726","currency":"USD"},{"qty":1000,"price":"$0.59784","currency":"USD"},{"qty":2500,"price":"$0.56400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/da9cd6fa2164f7b5a7124f4a9d8bbb29.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the SN74AHCT540PW inverting or non-inverting?","answer":"The SN74AHCT540PW is an inverting buffer. A logic-high input produces a logic-low output, and a logic-low input produces a logic-high output. This is the opposite of the SN74AHCT541, which is non-inverting. The inverting behaviour is fixed by the logic design — there is no configuration pin to change it."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74AHCT540PW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74AHCT540PW 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}}