{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PCA9306DCTRE4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"PCA9306DCTRE4","canonicalUrl":"https://icboms.com/texas-instruments/PCA9306DCTRE4","factsUrl":"https://icboms.com/api/mcp/products/PCA9306DCTRE4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments PCA9306DCTRE4, 2-channel bidirectional voltage-level translator, auto-direction sensing, VCCA 1.2–3.3 V, VCCB 1.8–5.5 V, open-drain/push-pull output, -40 to 105 °C, 8-LSSOP/8-MSOP SM8 package, Tape & Reel.","salesMarkdown":"## Why this part exists — and the selection trap it avoids The Texas Instruments PCA9306DCTRE4 is a single-circuit, 2-channel bidirectional voltage-level translator that handles the common case of an I2C or SMBus bus running at two different supply voltages. The auto-direction sensing means no direction-control GPIO is needed — the part watches the bus and switches drive direction on the fly, which simplifies firmware and saves a pin on the host controller. The trap designers hit is assuming any level shifter works for open-drain buses: this one is specified for open-drain and push-pull outputs, so it handles I2C's wired-AND signalling correctly, whereas a standard bidirectional buffer without that spec can latch up on the acknowledge pulse. ## Supply rails — the fit decision VCCA runs from 1.2 V to 3.3 V; The lower side (VCCA) is the reference for the 1.2 V to 3.3 V logic domain — typical for a low-voltage MCU or sensor. The part does not regulate these rails; it references them, so each supply must already be within tolerance. The 1.2 V minimum on VCCA is the floor for sub-1.8 V cores; if your low-side rail is below 1.2 V, this translator will not turn on the pass gates. ## Temperature grade and package — board-level context The Tape & Reel option is the standard for pick-and-place; Cut Tape is available for prototype quantities. The PCA9306DCTRE4 is listed as obsolete. Texas Instruments has discontinued this specific reel suffix variant. For production builds, the BOM line needs a replacement — the base product number PCA9306 has other package and reel options that may still be active, but each must be checked independently.","metaTitle":"PCA9306DCTRE4 Voltage-Level Translator, Obsolete","metaDescription":"PCA9306DCTRE4 is a 2-channel bidirectional voltage-level translator with auto-direction sensing. VCCA 1.2–3.3 V, VCCB 1.8–5.5 V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Interface & Transceivers"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Auto-Direction Sensing","Data Rate":"-","Output Type":"Open Drain, Push-Pull","Channel Type":"Bidirectional","Input Signal":"-","Mounting Type":"Surface Mount","Output Signal":"-","Package / Case":"8-LSSOP, 8-MSOP (0.110\\\", 2.80mm Width)","Product Status":"Obsolete","Voltage - VCCA":"1.2 V ~ 3.3 V","Voltage - VCCB":"1.8 V ~ 5.5 V","Translator Type":"Voltage Level","lifecycle_stage":"eol_hot","Number of Circuits":"1","Base Product Number":"PCA9306","Channels per Circuit":"2","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"SM8"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/43e17d9c17ce8c686f952c07574845d1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PCA9306DCTRE4/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for PCA9306DCTRE4?","answer":"The base product number PCA9306 has multiple package and reel options — some may still be active, but each suffix must be verified independently. For a form-fit-function substitute, look at other 2-channel bidirectional voltage-level translators in an 8-pin MSOP/SSOP package with auto-direction sensing and a VCCA range that includes 1.2 V to 3.3 V. We can help cross-reference against your specific supply rails and temperature requirements — include those details with your RFQ."},{"question":"Where can I buy PCA9306DCTRE4?","answer":"The PCA9306DCTRE4 is obsolete from the manufacturer but is available through our independent distribution network. Submit an RFQ on this page; we will confirm availability and current pricing at quote time. No stock or price figures are published here because the supply position changes — the RFQ gives you a firm, current answer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/PCA9306DCTRE4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/PCA9306DCTRE4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:13:05.922Z","lastPublished":"2026-07-16T12:13:05.922Z","indexable":true}}