{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74CBT3345PW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74CBT3345PW","canonicalUrl":"https://icboms.com/texas-instruments/SN74CBT3345PW","factsUrl":"https://icboms.com/api/mcp/products/SN74CBT3345PW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74CBT Bus Switch, SN74CBT3345PW, 8 x 1:1 circuit, single supply 4.5-5.5V, -40 to 85°C, 20-TSSOP package, tube.","salesMarkdown":"## Bus switch identity and circuit configuration The SN74CBT3345PW is an 8-bit bus switch from the 74CBT family, configured as 8 independent 1:1 SPST switch channels. Each channel presents a low on-resistance path when the output-enable pin is asserted, effectively connecting the A and B ports with propagation delay under 250 ps — the switch is transparent to the data rate up to the bandwidth limit of the pass transistor. The single-supply architecture means the switch passes signals between 0 V and Vcc; it does not level-translate, so both sides of the switch must operate within the same voltage domain. ## 20-TSSOP footprint and board integration Housed in a 20-pin TSSOP (4.40 mm width, 0.65 mm pitch), the SN74CBT3345PW mounts on the same land pattern as the standard 20-TSSOP footprint shared by many 74-series logic parts. The 0.65 mm pitch is routable on a two-layer board with 6/6 mil trace/space rules — no micro-via or blind-via stack-up required. The supplier device package designation 20-TSSOP matches the JEDEC MO-153 variation; confirm the PCB footprint matches the package drawing before committing the BOM position. Supplied in tube packaging (50 units per tube typical for TSSOP-20). ## Active production and compliance status Because the 74CBT family is a mature logic series with multiple second-source vendors (Nexperia, ON Semiconductor, Diodes Inc offer functionally equivalent 74CBT parts), a BOM hedge is straightforward — the 20-TSSOP footprint and 4.5-5.5V supply rail are industry-standard. Confirm the specific output-enable logic polarity and channel count match the design before substituting a different vendor's order code.","metaTitle":"SN74CBT3345PW Bus Switch, 8 x 1:1, 20-TSSOP, 4.5-5.5V","metaDescription":"Texas Instruments SN74CBT3345PW bus switch, 8 x 1:1 circuit, 4.5-5.5V supply, -40 to 85°C, 20-TSSOP. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":"74CBT","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"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":"4.5V ~ 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":"$1.3","priceTiers":[{"qty":1,"price":"$1.30000","currency":"USD"},{"qty":10,"price":"$1.16600","currency":"USD"},{"qty":25,"price":"$1.10720","currency":"USD"},{"qty":100,"price":"$0.90940","currency":"USD"},{"qty":250,"price":"$0.85008","currency":"USD"},{"qty":500,"price":"$0.75122","currency":"USD"},{"qty":1000,"price":"$0.59307","currency":"USD"},{"qty":2500,"price":"$0.55950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0fcabd306a50513977199e010fa74baf.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74CBT3345PW/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74CBT3345PW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74CBT3345PW 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}}