{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TCA9548ARGERQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TCA9548ARGERQ1","canonicalUrl":"https://icboms.com/texas-instruments/TCA9548ARGERQ1","factsUrl":"https://icboms.com/api/mcp/products/TCA9548ARGERQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TCA9548ARGERQ1, Bus Switch, 1 x 8:1, 1.65V to 5.25V supply, -40°C to 85°C, AEC-Q100 qualified, 24-VFQFN Exposed Pad package.","salesMarkdown":"The Texas Instruments TCA9548ARGERQ1 is a 1 x 8:1 bus switch, essentially an I2C/SMBus multiplexer that lets one master talk to up to eight downstream buses, each selected via the control register. It carries AEC-Q100 automotive qualification, so it's specced for the temperature swings and reliability demands of automotive electronics, but it's equally at home in any industrial or high-reliability system that needs to isolate or expand an I2C bus. The supply range runs from 1.65V to 5.25V, single-supply only. That covers 1.8V, 2.5V, 3.3V, and 5V logic rails without needing a level shifter on the supply pin — just match the bus voltage of the master. ## Package and footprint — what the assembly line needs to know It comes in a 24-VFQFN with exposed pad, 4x4 mm body. That exposed pad is the thermal and electrical ground connection — the datasheet layout shows a central via pattern under the pad. The part is surface-mount only, and the package code is 24-VQFN (4x4). The base product number is TCA9548, so if you see a different suffix (e.g. TCA9548APWR), that's a different package variant — check the package code before substituting.","metaTitle":"TCA9548ARGERQ1 Bus Switch, AEC-Q100, 1.65V-5.25V, 24-VQFN","metaDescription":"Texas Instruments TCA9548ARGERQ1 bus switch, 1 x 8:1 circuit, AEC-Q100 qualified, 1.65V to 5.25V supply, -40°C to 85°C, 24-VQFN package.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Mfr":"Texas Instruments","Type":"Bus Switch","Series":"Automotive, AEC-Q100","Circuit":"1 x 8:1","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"24-VFQFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"1.65V ~ 5.25V","Base Product Number":"TCA9548","Independent Circuits":"1","Operating Temperature":"-40°C~85°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"24-VQFN (4x4)","Current - Output High, Low":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4000","priceTiers":[{"qty":1,"price":"$2.40000","currency":"USD"},{"qty":10,"price":"$2.15700","currency":"USD"},{"qty":25,"price":"$2.03520","currency":"USD"},{"qty":100,"price":"$1.73400","currency":"USD"},{"qty":250,"price":"$1.62816","currency":"USD"},{"qty":500,"price":"$1.42464","currency":"USD"},{"qty":1000,"price":"$1.18042","currency":"USD"},{"qty":3000,"price":"$1.15200","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c82845c5e8286a99b03b54368de01844.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TCA9548ARGERQ1/alternatives.json"},"ai":{"faq":[{"question":"Is TCA9548ARGERQ1 AEC-Q100 qualified?","answer":"Yes, the TCA9548ARGERQ1 is part of the Automotive, AEC-Q100 series, meaning it has been qualified to the AEC-Q100 stress tests for automotive-grade integrated circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TCA9548ARGERQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TCA9548ARGERQ1 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}}