{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7731QDWQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7731QDWQ1","canonicalUrl":"https://icboms.com/texas-instruments/ISO7731QDWQ1","factsUrl":"https://icboms.com/api/mcp/products/ISO7731QDWQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7731QDWQ1, Automotive AEC-Q100, General Purpose digital isolator, 3-channel unidirectional, 100Mbps data rate, capacitive coupling, 5000Vrms isolation, 2.25V~5.5V supply, 16-SOIC, -40°C~125°C.","salesMarkdown":"## 5000Vrms reinforced isolation — what it buys you in a motor-drive or EV BMS Its 5000Vrms isolation voltage and 85kV/µs common-mode transient immunity make it a candidate for galvanic isolation in traction inverter gate drives, on-board charger communication, and battery-management-system SPI links where fast switching edges from SiC or GaN power stages demand high CMTI. The 100Mbps data rate keeps up with CAN FD and isolated SPI without adding bus-turnaround delay. Supply range of 2.25V to 5.5V on both sides lets it interface directly with 3.3V and 5V logic domains without external level shifters. ## 85 kV/µs CMTI — the spec that matters when the inverter switches at 100 V/ns Common-mode transient immunity of 85 kV/µs (minimum) means this isolator maintains data integrity when a 1.5 kV common-mode step slews at tens of kilovolts per microsecond — exactly what happens across the isolation barrier in a half-bridge gate drive during hard switching. If your power stage uses wide-bandgap devices, the 85 kV/µs floor keeps the receiver from latching or outputting a false edge. The propagation delay is symmetrical at 16 ns max (tpLH and tpHL), and pulse-width distortion stays under 4.9 ns, so the duty cycle of a PWM signal is preserved within a few nanoseconds across the barrier. That puts it in the tier for under-hood electronics, transmission control, and chassis-domain modules where the ambient can exceed 105°C. The channel configuration is 2 inputs on side 1 and 1 input on side 2 — a 2/1 split that suits a typical SPI isolation pattern (SCLK, MOSI in one direction, MISO in the other).","metaTitle":"TI ISO7731QDWQ1 digital isolator, 3-ch, 100Mbps, 5kVrms","metaDescription":"Texas Instruments ISO7731QDWQ1 automotive-grade capacitive-coupling isolator: 3 unidirectional channels, 100Mbps data rate, 5000Vrms isolation, 85kV/µs CMTI.","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-SOIC (0.295\\\", 7.50mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 5.5V","Number of Channels":"3","Base Product Number":"ISO7731","Voltage - Isolation":"5000Vrms","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-SOIC","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":"$2.6974","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d90a4d62e61a8af98bf9544de9b238cd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is ISO7731QDWQ1 RoHS compliant and lead-free?","answer":"The part is listed as RoHS compliant and lead-free per the manufacturer's specification. No separate RoHS certificate is required for standard procurement; the compliance status is stated in the product documentation."},{"question":"What is the closest pin-compatible alternative to ISO7731QDWQ1 in this component family?","answer":"Within the ISO7731 family, the base product number ISO7731 covers non-automotive-grade variants in the same 16-SOIC package and pinout. The ISO7731QDWQ1 is the AEC-Q100 qualified version. For a different channel count, the ISO7721 (2-channel) and ISO7741 (4-channel) share the same package footprint but differ in channel direction and count; verify the pin assignment against your schematic before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7731QDWQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7731QDWQ1 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}}