{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7741FDW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7741FDW","canonicalUrl":"https://icboms.com/texas-instruments/ISO7741FDW","factsUrl":"https://icboms.com/api/mcp/products/ISO7741FDW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7741FDW, General Purpose capacitive-coupling digital isolator, 4 unidirectional channels, 100 Mbps data rate, 5000 Vrms isolation, 2.25 V to 5.5 V supply, -55°C to 125°C, 16-SOIC wide-body package, Tube.","salesMarkdown":"## What the 100 Mbps and 5000 Vrms ratings mean for your isolation barrier The Texas Instruments ISO7741FDW is a 4-channel, unidirectional digital isolator using capacitive coupling to transfer signals across a reinforced isolation barrier. It is a general-purpose device, meaning it handles logic-level signals without encoding or protocol overhead — just pass the digital state straight through. The headline numbers are the 100 Mbps data rate and the 5000 Vrms isolation voltage. The 100 Mbps rating is fast enough for SPI clock lines up to 50 MHz (half-duplex) or full-duplex links like isolated CAN transceivers; if you are running a 10 MHz SPI bus, this part gives you plenty of timing margin. The 5000 Vrms isolation is the reinforced rating for medical equipment (patient-contact isolation), industrial motor drives with 480 VAC rails, and grid-tied power converters where the safety barrier must hold off transient surges. ## Temperature range and CMTI — where this part lives comfortably The 85 kV/µs common-mode transient immunity (CMTI) is the spec that matters when the isolator sits between a microcontroller and a half-bridge gate driver: fast-switching SiC or GaN FETs can dump several kV/µs across the barrier, and if the CMTI is too low the output glitches. At 85 kV/µs minimum, this part handles most modern power-stage edges without false triggering. The propagation delay is 16 ns max (both directions), and pulse-width distortion is 4.9 ns max — tight enough for 100 Mbps NRZ data with a 10 ns bit period. ## Channel assignment and supply flexibility The four channels are arranged as three on side 1 and one on side 2 (3/1 configuration). That is a common pattern for isolating an SPI bus: three lines from the controller to the peripheral (SCLK, MOSI, CS) and one line back (MISO). The unidirectional channel type means each channel drives in one direction only — no bidirectional data lines like I²C without external direction control. The part does not include an integrated isolated DC-DC converter (isolated power is listed as No), so each side needs its own supply rail. The wide-body 16-SOIC package (7.50 mm width) provides the creepage distance needed for the 5000 Vrms rating.","metaTitle":"ISO7741FDW General Purpose Digital Isolator, 100 Mbps","metaDescription":"Texas Instruments ISO7741FDW capacitive-coupling digital isolator: 4 channels, 100 Mbps data rate, 5000 Vrms isolation, -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":"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":"4","Base Product Number":"ISO7741","Voltage - Isolation":"5000Vrms","Operating Temperature":"-55°C~125°C","Inputs - Side 1/Side 2":"3/1","Rise / Fall Time (Typ)":"2.4ns, 2.4ns","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":"$4.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7d3b9b841350035d4a0188e814624994.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between ISO7741FDW and ISO7741FDBQ?","answer":"The primary difference is the package and shipping medium. Both share the same base product number ISO7741, same 4-channel unidirectional architecture, and same 100 Mbps data rate. Check the package code for footprint compatibility."},{"question":"Does ISO7741FDW require an external isolated power supply?","answer":"Yes. Each side of the isolation barrier needs its own supply rail, within the 2.25 V to 5.5 V range. You must provide separate power domains for side 1 and side 2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7741FDW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7741FDW 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}}