{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CY74FCT240ATQCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"CY74FCT240ATQCT","canonicalUrl":"https://icboms.com/texas-instruments/CY74FCT240ATQCT","factsUrl":"https://icboms.com/api/mcp/products/CY74FCT240ATQCT","rawCanonicalId":null},"summary":{"shortDescription":"74FCT series, Buffer/Inverting, 3-State, 2 elements, 4 bits per element, 4.75V-5.25V supply, 32mA/64mA output, -40°C to 85°C, 20-SSOP (3.90mm width), Surface Mount.","salesMarkdown":"## Dual 4-bit inverting buffer — 5V bus isolation in a narrow 20-SSOP The CY74FCT240ATQCT is a 74FCT-series dual 4-bit inverting buffer with 3-state outputs from Texas Instruments (legacy Cypress Semiconductor portfolio). It provides two independent 4-bit sections, each with its own output-enable control, for isolating or inverting digital buses in 5V systems. The part operates from a 4.75V to 5.25V supply and delivers 32mA source / 64mA sink output current per channel, sufficient for driving moderate capacitive loads on a backplane or buffering address/data lines to a memory array or peripheral interface. ## 32 mA source, 64 mA sink — what the drive strength buys you The asymmetric 32mA high-level / 64mA low-level output drive is typical of FCT logic, optimized for driving the higher capacitive load of a bus-low condition. In practice, this means the part can cleanly switch a 50 pF bus at 5V with sub-5 ns propagation delays — enough headroom for 33 MHz to 50 MHz clocked buses without signal-integrity work. The 3-state outputs let multiple devices share a common data bus; the two enable pins (one per 4-bit section) give granular control for byte-wide isolation. ## 20-SSOP narrow body — land pattern check required This is the narrow-body SSOP-20, not the wider 5.3 mm or 7.5 mm variants. If your board was laid out for a TSSOP-20 (4.4 mm body) or a standard SOIC-20 (7.5 mm body), the footprint will not match. Verify the land pattern against the 20-SSOP (3.90 mm) mechanical drawing before committing the BOM. Surface-mount reflow profile per J-STD-020 applies;. The 5V ±5% supply rail is standard for legacy 5V TTL-logic environments; if your system has migrated to 3.3V or lower, this buffer will need a separate 5V rail or a level-shifting alternative. ## Active lifecycle, ROHS3 — no end-of-life pressure For a production BOM line, this means no imminent requalification risk. The 74FCT series has broad installed base, so second-source availability through independent distribution is generally good — but the SN74LVTH16245ADGVR (a 2.7V to 3.6V non-inverting transceiver) is not a functional drop-in replacement due to the supply voltage and logic polarity differences.","metaTitle":"CY74FCT240ATQCT Buffer, Inverting 3-State, 20-SSOP","metaDescription":"CY74FCT240ATQCT dual 4-bit inverting buffer with 3-state outputs, 32/64mA drive, -40 to 85°C, 20-SSOP. Active production, ROHS3.","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":"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":"2","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-SSOP","Current - Output High, Low":"32mA, 64mA","Number of Bits per Element":"4"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.88","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.88000","currency":"USD"},{"qty":10,"price":"$0.78500","currency":"USD"},{"qty":25,"price":"$0.74480","currency":"USD"},{"qty":100,"price":"$0.61190","currency":"USD"},{"qty":250,"price":"$0.57204","currency":"USD"},{"qty":500,"price":"$0.50552","currency":"USD"},{"qty":1000,"price":"$0.39909","currency":"USD"},{"qty":2500,"price":"$0.37650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7573f3003978a23a0d87152fafe1f5ea.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/CY74FCT240ATQCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/CY74FCT240ATQCT 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}}