{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74CBT3305CDR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74CBT3305CDR","canonicalUrl":"https://icboms.com/texas-instruments/SN74CBT3305CDR","factsUrl":"https://icboms.com/api/mcp/products/SN74CBT3305CDR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments 74CBT Bus Switch, SN74CBT3305CDR, 2 independent 1:1 circuits, 4.5V~5.5V single supply, 8-SOIC surface mount, -40°C~85°C.","salesMarkdown":"## Two independent 1:1 switches in an 8-SOIC The SN74CBT3305CDR: Each switch connects a single A port to a single B port with low on-resistance, effectively isolating or connecting two signal paths under digital control. ## Supply rail and signal integrity The switch's low on-resistance (typically 5 Ω) and flatness across the signal swing keep the inserted voltage drop below 25 mV at 5 mA — negligible for most digital paths, but worth budgeting if the bus carries analog levels. Each of the two independent circuits is a 1:1 SPST switch controlled by a dedicated output-enable pin. When the OE pin is low, the switch is on; when high, the switch presents a high-impedance state to the bus. This per-channel control lets you isolate one segment of a bus while keeping another active — useful for power-sequencing or hot-swap backplanes. ## Package and board-fit The 8-SOIC package has a seated height of approximately 1.75 mm, fitting into low-profile designs. No exposed thermal pad means the board layout is straightforward — just route the supply, ground, and signal traces per the datasheet's recommended land pattern. ROHS3 compliant, it meets the current EU RoHS exemption-free requirements. For BOM planning, the active status means no immediate need to qualify a replacement. The 74CBT family is mature and widely second-sourced; if a pin-compatible alternative is ever needed, the SN74CBT3305CDR's 8-SOIC footprint and 5 V supply are common across the bus-switch category.","metaTitle":"SN74CBT3305CDR Bus Switch, 2-Circuit, 4.5-5.5V, 8-SOIC","metaDescription":"Texas Instruments SN74CBT3305CDR bus switch, 2 independent 1:1 circuits, 4.5-5.5V supply, 8-SOIC package. 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":"1 x 1:1","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Independent Circuits":"2","Operating Temperature":"-40°C ~ 85°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"8-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.65","priceTiers":[{"qty":1,"price":"$0.65000","currency":"USD"},{"qty":10,"price":"$0.55600","currency":"USD"},{"qty":25,"price":"$0.51920","currency":"USD"},{"qty":100,"price":"$0.41550","currency":"USD"},{"qty":250,"price":"$0.38584","currency":"USD"},{"qty":500,"price":"$0.32648","currency":"USD"},{"qty":1000,"price":"$0.25228","currency":"USD"},{"qty":2500,"price":"$0.23002","currency":"USD"},{"qty":5000,"price":"$0.21518","currency":"USD"},{"qty":12500,"price":"$0.21000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/56f3dd0a064dc382037b1b29a40f3d99.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SN74CBT3305CDR/alternatives.json"},"ai":{"faq":[{"question":"How many independent switches does SN74CBT3305CDR contain?","answer":"It contains two independent 1:1 SPST switches. Each switch has its own output-enable pin, allowing independent control of two signal paths in a single 8-pin package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74CBT3305CDR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74CBT3305CDR 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}}