{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74LVC540APW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74LVC540APW","canonicalUrl":"https://icboms.com/texas-instruments/SN74LVC540APW","factsUrl":"https://icboms.com/api/mcp/products/SN74LVC540APW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74LVC series, SN74LVC540APW, Buffer, Inverting, 3-State, 1.65V ~ 3.6V supply, 24mA output, -40°C ~ 125°C, 20-TSSOP, Surface Mount.","salesMarkdown":"The inverting path and 3-state control let you isolate or invert a data bus with a single device. Each of the eight outputs can sink or source 24mA, enough to drive a bus, a bank of LEDs, or the inputs of a downstream peripheral without an external line driver. ## Why the wide supply range matters for your BOM The 1.65V to 3.6V supply range means one line item covers mixed-voltage boards where a 3.3V bus talks to a 1.8V FPGA bank. You do not need a separate 5V-tolerant buffer or a level shifter — the LVC family was designed for this. If your legacy BOM still uses a 74LS or 74ABT part at 5V, the SN74LVC540APW will not drop in without a supply rail change, but it replaces that function at lower voltage with the same 24mA drive. It is a current-production device you can qualify into a new design without planning a respin for obsolescence. ## 20-TSSOP — rework and layout notes The 20-TSSOP package (4.40mm body width, 0.65mm pitch) is a fine-pitch surface-mount footprint. It is reworkable with hot air if you have a steady hand and a small tip — the leads are exposed and visible, so alignment after reflow is straightforward. The 0.65mm pitch means a standard stencil for 0.5mm or 0.65mm works; just watch the solder paste volume to avoid bridging on adjacent pins.","metaTitle":"SN74LVC540APW Buffer, Inverting, 3-State, 20-TSSOP","metaDescription":"Texas Instruments SN74LVC540APW 8-bit inverting buffer with 3-state outputs. 24mA drive, -40°C to 125°C, 1.65V-3.6V supply. Active lifecycle.","metaKeywords":null},"attributes":{"series":"74LVC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"74LVC","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":"1.65V ~ 3.6V","Number of Elements":"1","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"20-TSSOP","Current - Output High, Low":"24mA, 24mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.51","priceTiers":[{"qty":1,"price":"$1.51000","currency":"USD"},{"qty":10,"price":"$1.34800","currency":"USD"},{"qty":25,"price":"$1.27920","currency":"USD"},{"qty":100,"price":"$1.05080","currency":"USD"},{"qty":250,"price":"$0.98224","currency":"USD"},{"qty":500,"price":"$0.86804","currency":"USD"},{"qty":1000,"price":"$0.68529","currency":"USD"},{"qty":2500,"price":"$0.64650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2d1b7350aa8dbf5556ffb7c1f7c7b1bc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74LVC540APW/alternatives.json"},"ai":{"faq":[{"question":"Is SN74LVC540APW compatible with 3.3V supply?","answer":"Yes. The supply range is 1.65V to 3.6V, so 3.3V is right in the middle. The outputs swing rail-to-rail, so a 3.3V supply gives a full 3.3V logic swing on the outputs."},{"question":"What is the difference between SN74LVC540APW and SN74LVC540APWR?","answer":"The only difference is the shipping medium. The SN74LVC540APW ships in a tube; the SN74LVC540APWR ships on tape and reel. The silicon, package, and electrical specs are identical."},{"question":"Does SN74LVC540APW have Schmitt trigger inputs?","answer":"The evidence does not list Schmitt trigger inputs. This is a standard LVC buffer with CMOS input thresholds, not a Schmitt-trigger device. For noisy environments or slow edges, a Schmitt-trigger part like the SN74LVC14A would be a better fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74LVC540APW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74LVC540APW 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}}