{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7731FDWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7731FDWR","canonicalUrl":"https://icboms.com/texas-instruments/ISO7731FDWR","factsUrl":"https://icboms.com/api/mcp/products/ISO7731FDWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7731FDWR, General Purpose digital isolator, Capacitive Coupling, 3-channel unidirectional, 100Mbps data rate, 5000Vrms isolation, 2.25V~5.5V supply, -55°C~125°C, 16-SOIC.","salesMarkdown":"## Three-channel capacitive isolator with 5000 Vrms reinforced isolation The Texas Instruments ISO7731FDWR is a three-channel, unidirectional digital isolator using capacitive coupling technology. ## 100 Mbps data rate with 16 ns propagation delay The 100 Mbps data rate with a maximum propagation delay of 16 ns supports isolating high-speed digital buses like SPI at 50 MHz clock rates without introducing timing margin issues. The 1.3 ns typical rise and 1.4 ns fall times preserve signal integrity across the isolation barrier, while the 4.9 ns maximum pulse-width distortion keeps duty-cycle distortion low enough for most synchronous interfaces. ## 85 kV/µs common-mode transient immunity — built for motor drives and inverters With a minimum common-mode transient immunity of 85 kV/µs, this isolator can reject the fast voltage transients present in motor-drive, inverter, and switched-mode power-supply applications. The 2/1 input-to-output channel split is a natural fit for isolating a three-wire SPI bus (SCLK, MOSI, MISO) where the chip-select is on the same side as the controller. The base product number ISO7731 spans multiple channel configurations and directionality options, so the family is well-established with long-term supply visibility. The FDWR suffix denotes the 16-SOIC wide-body package on tape-and-reel, which is the standard ordering code for volume production.","metaTitle":"TI ISO7731FDWR 3-Ch Digital Isolator, 100Mbps, 5000Vrms","metaDescription":"Texas Instruments ISO7731FDWR 3-channel unidirectional digital isolator. 100Mbps data rate, 5000Vrms isolation, 85kV/µs CMTI, -55°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":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"-55°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":"$3.0300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4bb33d1fcdd7379b943657a154225ada.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is ISO7731FDWR a unidirectional isolator?","answer":"Yes, the ISO7731FDWR is a unidirectional isolator with two channels on side 1 and one channel on side 2. This makes it suitable for isolating signals that flow in one direction only, such as SPI data lines where the controller drives SCLK and MOSI (side 1) and the peripheral drives MISO (side 2)."},{"question":"Can ISO7731FDWR be used as a replacement for ISO7731?","answer":"The ISO7731FDWR is a specific ordering variant within the ISO7731 base product family. The FDWR suffix indicates the 16-SOIC wide-body package on tape-and-reel. As long as the package and reel format match your BOM requirement, it is a valid ordering code for the same functional device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7731FDWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7731FDWR 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}}