{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY74FCT245ATQCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CY74FCT245ATQCT","canonicalUrl":"https://icboms.com/texas-instruments/CY74FCT245ATQCT","factsUrl":"https://icboms.com/api/mcp/products/CY74FCT245ATQCT","rawCanonicalId":null},"summary":{"shortDescription":"Cypress 74FCT series CY74FCT245ATQCT octal bus transceiver, non-inverting, 3-state outputs, 4.75V-5.25V supply, 32mA source / 64mA sink, -40°C to 85°C, 20-SSOP package.","salesMarkdown":"## 5V-only octal bus transceiver for industrial backplanes The CY74FCT245ATQCT from Cypress (now Infineon) is an 8-bit non-inverting bus transceiver in the 74FCT logic family, designed for bidirectional data flow between two 5V buses with 3-state outputs on both ports. It operates from a 4.75V to 5.25V supply — strictly a 5V part, not 3.3V-tolerant on the I/O — and delivers 32mA source / 64mA sink per output, enough to drive heavily loaded backplanes or long PCB traces without external buffers. ## Supply voltage and 3.3V compatibility The supply range is 4.75V to 5.25V, and the logic inputs are not 3.3V-compatible. If your design uses a 3.3V microcontroller or FPGA on one side of the bus, you need a level-shifting transceiver like the SN74LVTH16245ADGVR (2.7V supply, 3.3V I/O tolerant). The CY74FCT245ATQCT is a 5V-only part — applying 3.3V to the VCC rail will not meet the minimum operating voltage, and driving the inputs with 3.3V logic may not cross the VIH threshold reliably. With 32mA source and 64mA sink per channel, this part can drive a 50-ohm terminated backplane or a bank of parallel inputs without needing a separate line driver. The asymmetric drive (more sink than source) matches the typical current draw of TTL-compatible loads. For lighter loads — say, a single 3.3V-tolerant peripheral through a level shifter — the SN74ABT2245DW offers similar drive at 4.5V minimum supply but in a wider SOIC-20 package. ROHS3 compliant.","metaTitle":"CY74FCT245ATQCT 74FCT Octal Transceiver, 5V 20-SSOP","metaDescription":"CY74FCT245ATQCT 74FCT octal bus transceiver, non-inverting, 3-state outputs. 4.75V-5.25V supply, 32/64mA drive, -40°C to 85°C. Active lifecycle, 20-SSOP.","metaKeywords":null},"attributes":{"series":"74FCT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"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":"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":"$0.96","priceTiers":[{"qty":1,"price":"$0.96000","currency":"USD"},{"qty":10,"price":"$0.85400","currency":"USD"},{"qty":25,"price":"$0.81080","currency":"USD"},{"qty":100,"price":"$0.66590","currency":"USD"},{"qty":250,"price":"$0.62252","currency":"USD"},{"qty":500,"price":"$0.55012","currency":"USD"},{"qty":1000,"price":"$0.43431","currency":"USD"},{"qty":2500,"price":"$0.40950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/80df8a6558212cd30294a73b59f1ecdb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/CY74FCT245ATQCT/alternatives.json"},"ai":{"faq":[{"question":"Is CY74FCT245ATQCT compatible with 3.3V logic?","answer":"No. The part operates from a 4.75V to 5.25V supply and its logic inputs are not specified for 3.3V levels. For 3.3V bus translation, consider a 2.7V-supply transceiver like the SN74LVTH16245ADGVR."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CY74FCT245ATQCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CY74FCT245ATQCT 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}}