{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TXB0104RUTR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TXB0104RUTR","canonicalUrl":"https://icboms.com/texas-instruments/TXB0104RUTR","factsUrl":"https://icboms.com/api/mcp/products/TXB0104RUTR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TXB0104RUTR, bidirectional voltage-level translator, 4 channels, 100 Mbps data rate, auto-direction sensing, dual supply 1.2 V–3.6 V / 1.65 V–5.5 V, 12-UQFN package, -40°C to 85°C.","salesMarkdown":"The Texas Instruments TXB0104RUTR is a 4-channel bidirectional voltage-level translator that moves logic signals between two independent supply domains without a direction-control pin — the auto-direction sensing circuitry handles bus turn-around on the fly. It is the part you reach for when a 1.8 V sensor needs to talk to a 3.3 V MCU, or a 5 V legacy peripheral interfaces with a 1.2 V core. The 100 Mbps data rate covers SPI, UART, GPIO, and most parallel-bus handshake lines below 50 MHz clock rates. At 100 Mbps the TXB0104RUTR can sustain a 50 MHz clock or a 100 Mbit/s data stream with a 10 ns bit period. That is fast enough for quad-SPI at 50 MHz, for a 50 MHz SDIO bus, and for any UART or I2C (which runs orders of magnitude slower). It is not fast enough for a 100 MHz DDR memory interface or a 200 MHz serialiser — for those you step up to a 200 Mbps or 420 Mbps translator like the TXU0304BQAR or SN74LXC2T45DTTR. The practical takeaway: if your bus runs above 50 MHz, this part is not the right fit; below that, the 100 Mbps rating gives you comfortable margin. ## Auto-direction sensing — no DIR pin, no firmware overhead The auto-direction sensing means the part detects the data flow on each channel by comparing the input edge to the output load. No GPIO pin wasted on a DIR signal, no firmware state machine to toggle direction before a bus transaction. This simplifies both the PCB layout (one fewer trace) and the BOM (no pull-up or pull-down on a DIR line). The trade-off: because the sensing circuit relies on edge detection, the part is not recommended for open-drain signals like I2C — the weak pull-up cannot guarantee a clean edge for the direction sense. For I2C, use a dedicated open-drain translator such as the TXS0104 series. ## Package and rework — 12-UQFN (1.7 x 2 mm) The TXB0104RUTR comes in a 12-UFQFN package with a 1.7 x 2 mm body and a 0.4 mm pitch — small enough for space-constrained designs but still hand-reworkable with a hot-air station and fine-tipped tweezers. The supplier device package notes the 1.7 x 2 mm footprint; the exposed pad is minimal, so thermal mass is low and the part lifts cleanly at 300 °C air.","metaTitle":"TXB0104RUTR Voltage-Level Translator, 100 Mbps","metaDescription":"Texas Instruments TXB0104RUTR bidirectional voltage-level translator, 100 Mbps data rate, auto-direction sensing, 1.2 V to 5.5 V supply range, 12-UQFN package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Interface & Transceivers"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Auto-Direction Sensing","Data Rate":"100Mbps","Output Type":"Tri-State, Non-Inverted","Channel Type":"Bidirectional","Input Signal":"-","Mounting Type":"Surface Mount","Output Signal":"-","Package / Case":"12-UFQFN","Product Status":"Active","Voltage - VCCA":"1.2 V ~ 3.6 V","Voltage - VCCB":"1.65 V ~ 5.5 V","Translator Type":"Voltage Level","lifecycle_stage":"eol_hot","Number of Circuits":"1","Base Product Number":"TXB0104","Channels per Circuit":"4","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"12-UQFN (1.7x2)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3100","priceTiers":[{"qty":1,"price":"$1.31000","currency":"USD"},{"qty":10,"price":"$1.16900","currency":"USD"},{"qty":25,"price":"$1.11000","currency":"USD"},{"qty":100,"price":"$0.91180","currency":"USD"},{"qty":250,"price":"$0.85236","currency":"USD"},{"qty":500,"price":"$0.75324","currency":"USD"},{"qty":1000,"price":"$0.59466","currency":"USD"},{"qty":3000,"price":"$0.56100","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c98cf2dc6bf614899e44e306393cd5f7.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TXB0104RUTR/alternatives.json"},"ai":{"faq":[{"question":"Is TXB0104RUTR suitable for level-shifting I2C signals?","answer":"No. The auto-direction sensing relies on edge detection, which does not work reliably with the weak pull-up of open-drain I2C. For I2C level shifting, use a dedicated open-drain translator such as the TXS0104 series."},{"question":"Does TXB0104RUTR support a data rate higher than 100 Mbps?","answer":"No. The rated maximum data rate is 100 Mbps. For higher-speed bidirectional translation, consider the TXU0304BQAR (200 Mbps) or SN74LXC2T45DTTR (420 Mbps)."},{"question":"What is the difference between TXB0104RUTR and TXS0104RUTR?","answer":"The TXB0104RUTR uses auto-direction sensing and is intended for push-pull signals (SPI, UART, GPIO). The TXS0104RUTR is designed for open-drain signals (I2C) and includes integrated pull-up resistors. They are not pin-compatible for all applications — choose based on the signal type on your bus."},{"question":"Does TXB0104RUTR require a direction control pin?","answer":"No. The auto-direction sensing feature eliminates the need for a DIR pin — the part detects data flow on each channel independently."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TXB0104RUTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TXB0104RUTR 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}}