{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74CBT3245APW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74CBT3245APW","canonicalUrl":"https://icboms.com/texas-instruments/SN74CBT3245APW","factsUrl":"https://icboms.com/api/mcp/products/SN74CBT3245APW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74CBT SN74CBT3245APW, Bus Switch, 8 x 1:1, Single Supply 4V ~ 5.5V, -40°C ~ 85°C, Surface Mount 20-TSSOP, Tube.","salesMarkdown":"Its job is to connect or isolate two signal paths per channel with minimal propagation delay — essentially a low-ON-resistance pass gate controlled by a single enable pin for each byte. Typical applications include hot-swap isolation, bus sharing between peripherals, and voltage-level translation where the switch's low on-capacitance keeps signal integrity clean up to the device's bandwidth. ## Supply rail and temperature — the decision drivers The single-supply range of 4 V to 5.5 V is the headline constraint. At 5 V nominal the switch delivers its lowest on-resistance and best signal swing; dropping to 4 V still keeps the pass gate fully enhanced for 3.3 V logic inputs, but the design should verify that the output high level meets the downstream receiver's VIH at the minimum supply. No derating is needed for most motor-drive or outdoor applications, but if the ambient regularly exceeds 85°C — say in a sealed enclosure near a heat sink — the designer should check the junction-to-ambient thermal resistance for the TSSOP package to confirm margin. The device is rated for continuous operation across the full temperature band.","metaTitle":"SN74CBT3245APW Bus Switch, 8 x 1:1, 4V-5.5V, 20-TSSOP","metaDescription":"TI SN74CBT3245APW bus switch, 8-bit 1:1 configuration, 4V to 5.5V supply, industrial temp -40°C to 85°C, 20-TSSOP package.","metaKeywords":null},"attributes":{"series":"74CBT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Type":"Bus Switch","Series":"74CBT","Circuit":"8 x 1:1","Package":"Tube","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4V ~ 5.5V","Independent Circuits":"1","Operating Temperature":"-40°C ~ 85°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"20-TSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.01","priceTiers":[{"qty":1,"price":"$1.01000","currency":"USD"},{"qty":10,"price":"$0.90700","currency":"USD"},{"qty":25,"price":"$0.86080","currency":"USD"},{"qty":100,"price":"$0.70700","currency":"USD"},{"qty":250,"price":"$0.66092","currency":"USD"},{"qty":500,"price":"$0.58406","currency":"USD"},{"qty":1000,"price":"$0.46110","currency":"USD"},{"qty":2500,"price":"$0.43500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/71b30a5fda578a246f03e458dbe184f7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74CBT3245APW/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between SN74CBT3245APW and SN74CBT3245ADW?","answer":"The difference is package: the APW suffix designates the 20-TSSOP (4.40 mm width) while the ADW suffix is the 20-SOIC (7.50 mm width). Both are 8 x 1:1 bus switches with the same electrical specifications. The TSSOP saves about 40% board area versus the SOIC."},{"question":"What is SN74CBT3245APW's listed type and series?","answer":"The device type is Bus Switch and the series is 74CBT. It is an 8-bit, 1:1 configuration with a single supply operating from 4 V to 5.5 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74CBT3245APW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74CBT3245APW 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}}