{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY74FCT2543CTQCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CY74FCT2543CTQCT","canonicalUrl":"https://icboms.com/texas-instruments/CY74FCT2543CTQCT","factsUrl":"https://icboms.com/api/mcp/products/CY74FCT2543CTQCT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74FCT series CY74FCT2543CTQCT, Transceiver Non-Inverting, 1 Element 8-bit, 3-State Output, 4.75V–5.25V Supply, -40°C to 85°C, 24-SSOP.","salesMarkdown":"## What this 74FCT transceiver does — and what it doesn't The CY74FCT2543CTQCT is a single-element, 8-bit non-inverting transceiver from the 74FCT logic family, with 3-state outputs. It operates from a 4.75V to 5.25V supply, making it a direct fit for legacy 5V TTL/CMOS buses where a 3.3V part would leave no noise margin. The 24-SSOP package (3.90mm body width) is a narrow-surface-mount footprint — not the same land pattern as a 24-pin SOIC or TSSOP, so verify the PCB layout before committing the BOM line. ## Output drive — 15mA / 12mA: enough for a loaded bus? High-level output current is 15mA, low-level is 12mA. That's typical for the 74FCT family — adequate for driving a few TTL loads or a short backplane trace, but not for heavy fan-out or long cables. If your design needs 32mA per pin, the SN74ABT2245DW is a closer match, though it runs on a 4.5V supply and comes in a larger SOIC package. The 15mA / 12mA rating also means the part is not intended for high-current line driving; keep the trace length under a few inches at 5V to avoid signal degradation. ## Temperature grade and environment Rated for -40°C to 85°C ambient, the industrial temperature range covers factory-floor automation, outdoor telecom cabinets, and commercial HVAC controllers. It is not AEC-Q100 qualified, so avoid under-hood or chassis-domain automotive applications without additional screening. The 5V-only supply also rules out battery-powered portable gear where 3.3V or lower rails dominate. ## Lifecycle and sourcing reality ROHS3 compliant, so it passes EU material restrictions without an exemption.","metaTitle":"CY74FCT2543CTQCT 74FCT Transceiver, 5V, 24-SSOP – Active","metaDescription":"CY74FCT2543CTQCT 74FCT non-inverting transceiver with 3-state outputs, 4.75V–5.25V supply, 15mA/12mA drive, -40°C to 85°C, 24-SSOP.","metaKeywords":null},"attributes":{"series":"74FCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"74FCT","Package":"Tape & Reel (TR); Cut Tape (CT)","Logic Type":"Transceiver, Non-Inverting","Output Type":"3-State","Mounting Type":"Surface Mount","Package / Case":"24-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":"24-SSOP","Current - Output High, Low":"15mA, 12mA","Number of Bits per Element":"8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.49000","currency":"USD"},{"qty":10,"price":"$1.33500","currency":"USD"},{"qty":25,"price":"$1.26720","currency":"USD"},{"qty":100,"price":"$1.04100","currency":"USD"},{"qty":250,"price":"$0.97312","currency":"USD"},{"qty":500,"price":"$0.85998","currency":"USD"},{"qty":1000,"price":"$0.67893","currency":"USD"},{"qty":2500,"price":"$0.64050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/537bd0afd0ccba7bce55e42349687c9a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can CY74FCT2543CTQCT work with 3.3V signals?","answer":"No. The supply voltage range is 4.75V to 5.25V, and the inputs are 5V-tolerant only. Applying 3.3V logic levels will not meet the VIH threshold, and running the supply below 4.75V is out of spec. For a 3.3V bus, consider a part like the SN74LVTH16245ADGVR which operates from 2.7V."},{"question":"Is CY74FCT2543CTQCT RoHS compliant?","answer":"Yes, it is ROHS3 compliant, meaning it meets the latest EU RoHS directive with no exempted substances. No additional documentation is needed for EU market placement."},{"question":"What are the equivalent alternatives to CY74FCT2543CTQCT?","answer":"For a 5V bus with similar drive, the SN74ABT2245DW is a single-element 8-bit transceiver in a SOIC package, but it runs at 4.5V supply and offers 32mA output drive. For a 3.3V system, the SN74LVTH16245ADGVR is a dual-element part with 32mA drive at 2.7V. Neither is a drop-in replacement — the CY74FCT2543CTQCT is unique in its 5V-only, narrow SSOP footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CY74FCT2543CTQCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CY74FCT2543CTQCT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}