{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY74FCT540CTQCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CY74FCT540CTQCT","canonicalUrl":"https://icboms.com/texas-instruments/CY74FCT540CTQCT","factsUrl":"https://icboms.com/api/mcp/products/CY74FCT540CTQCT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74FCT series Buffer, Inverting, CY74FCT540CTQCT, 20-SSOP package, 4.75V-5.25V supply, 3-State output, -40°C to 85°C.","salesMarkdown":"## 5.25V supply, 32/64 mA drive, 20-SSOP The Texas Instruments CY74FCT540CTQCT is an 8-bit buffer with inverting logic and 3-state outputs from the 74FCT series. The single-element, 8-bit layout means one chip handles a full byte-wide data bus with a single output-enable control for the 3-state bus hold-off. ## Active lifecycle and compliance baseline For a 5V bus buffer in a control card or I/O module, this part fits without thermal derating concerns inside a ventilated enclosure. ## Second-source cross-check against SN74AHCT540DGVR The SN74AHCT540DGVR is the closest functional peer: same 8-bit inverting buffer with 3-state outputs, same 20-pin SSOP footprint. The key difference is the output drive — the 74AHCT variant delivers 8 mA typical versus the 74FCT's 32/64 mA asymmetric drive. For a lightly loaded bus (under 8 mA per line), the AHCT part is a drop-in; for higher fan-out or longer trace lengths, the FCT's stronger drive maintains signal integrity. ## Sourcing posture for the BOM line This part is sourced through authorized and independent distribution channels.","metaTitle":"CY74FCT540CTQCT Buffer Inverting 3-State 20-SSOP, 5.25V","metaDescription":"Texas Instruments CY74FCT540CTQCT buffer/inverting 3-state logic IC. 4.75-5.25V supply, 32/64mA output, -40 to 85°C. Active, ROHS3. Order via RFQ.","metaKeywords":null},"attributes":{"series":"74FCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"74FCT","Package":"Tape & Reel (TR); Cut Tape (CT)","Logic Type":"Buffer, Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"20-SSOP (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Number of Elements":"1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-SSOP","Current - Output High, Low":"32mA, 64mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.47","priceTiers":[{"qty":1,"price":"$1.47000","currency":"USD"},{"qty":10,"price":"$1.31000","currency":"USD"},{"qty":25,"price":"$1.24360","currency":"USD"},{"qty":100,"price":"$1.02150","currency":"USD"},{"qty":250,"price":"$0.95492","currency":"USD"},{"qty":500,"price":"$0.84386","currency":"USD"},{"qty":1000,"price":"$0.66621","currency":"USD"},{"qty":2500,"price":"$0.62850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5e37ada4a2048aa804042dd633dc51e7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY74FCT540CTQCT/alternatives.json"},"ai":{"faq":[{"question":"Will CY74FCT540CTQCT drop into a board designed for SN74AHCT540DGVR?","answer":"The package footprint is the same 20-SSOP (0.154\"), so the mechanical fit is identical. The supply voltage range overlaps (both are 5V logic families). The main difference is output drive: the FCT part delivers 32/64 mA versus the AHCT's 8 mA. For bus loads under 8 mA per line, it is a functional drop-in; for higher fan-out, the FCT's stronger drive is an advantage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CY74FCT540CTQCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CY74FCT540CTQCT 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}}