{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7731QDBQQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7731QDBQQ1","canonicalUrl":"https://icboms.com/texas-instruments/ISO7731QDBQQ1","factsUrl":"https://icboms.com/api/mcp/products/ISO7731QDBQQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7731QDBQQ1, Automotive AEC-Q100, General Purpose digital isolator, 3 unidirectional channels, 100Mbps data rate, 3000Vrms isolation, capacitive coupling, 2.25V~5.5V supply, 16-SSOP package, -40°C~125°C.","salesMarkdown":"## 3000Vrms isolation with 85kV/µs CMTI — built for noisy automotive rails The Texas Instruments ISO7731QDBQQ1 is a three-channel, unidirectional digital isolator using capacitive coupling to deliver 3000Vrms galvanic isolation. The 100Mbps data rate covers isolated SPI, UART, and CAN FD signaling without adding propagation delay — max 16ns each direction — and the 85kV/µs minimum common-mode transient immunity keeps the link clean when an inverter phase switches or a relay coil kicks. ## Supply range and channel direction — what the 2/1 split means Two channels run from Side 1 to Side 2, one channel runs from Side 2 to Side 1 — a 2/1 input split that suits a typical SPI isolation interface (SCLK, MOSI forward; MISO return) or a CAN transceiver isolation barrier with TX and RX on separate sides. The supply range spans 2.25V to 5.5V on each side independently, so you can mate a 3.3V MCU domain on one side with a 5V transceiver or sensor rail on the other without a level shifter. ## Package and footprint — 16-SSOP, surface-mount only The narrow SSOP footprint is common across the ISO7731 family, so a layout designed for the base part number accepts this variant directly.","metaTitle":"TI ISO7731QDBQQ1 Digital Isolator, 3-Ch, 100Mbps, 3000Vrms","metaDescription":"Texas Instruments ISO7731QDBQQ1 automotive-grade digital isolator: 3 unidirectional channels, 100Mbps data rate, 3000Vrms isolation, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Mfr":"Texas Instruments","Type":"General Purpose","Series":"Automotive, AEC-Q100","Package":"Tube","Data Rate":"100Mbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 5.5V","Number of Channels":"3","Base Product Number":"ISO7731","Voltage - Isolation":"3000Vrms","Operating Temperature":"-40°C~125°C","Inputs - Side 1/Side 2":"2/1","Rise / Fall Time (Typ)":"1.3ns, 1.4ns","Supplier Device Package":"16-SSOP","Pulse Width Distortion (Max)":"4.9ns","Propagation Delay tpLH / tpHL (Max)":"16ns, 16ns","Common Mode Transient Immunity (Min)":"85kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d94dadd871e18902ea86bcc99212314e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the ISO7731QDBQQ1 suitable for automotive applications?","answer":"Yes."},{"question":"What is the data rate and propagation delay of the ISO7731QDBQQ1?","answer":"It supports a 100Mbps data rate with a maximum propagation delay of 16ns in both directions (tpLH and tpHL). Pulse-width distortion is limited to 4.9ns max."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7731QDBQQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7731QDBQQ1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}