{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7741FDBQR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7741FDBQR","canonicalUrl":"https://icboms.com/texas-instruments/ISO7741FDBQR","factsUrl":"https://icboms.com/api/mcp/products/ISO7741FDBQR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7741FDBQR, General-Purpose digital isolator, Capacitive Coupling, 4-channel unidirectional, 100 Mbps, 3000 Vrms isolation, 85 kV/µs CMTI, 2.25 V to 5.5 V supply, -55°C to 125°C, 16-SSOP package.","salesMarkdown":"## Capacitive-coupled isolation for 100 Mbps digital links The Texas Instruments ISO7741FDBQR is a 4-channel, unidirectional, general-purpose digital isolator using capacitive-coupling technology. It is designed to pass digital signals across a galvanic isolation barrier rated at 3000 Vrms, with a data rate up to 100 Mbps. Typical applications include industrial fieldbus isolation (RS-485, CAN), SPI isolation, general-purpose digital I/O isolation, and isolated power-supply feedback loops where high common-mode transient immunity (85 kV/µs minimum) is needed to survive fast-switching power stages. ## Channel assignment and signal direction The ISO7741FDBQR has three channels on side 1 and one channel on side 2 (3/1 configuration), all unidirectional. This suits common isolation topologies like SPI, where SCLK, MOSI, and chip-select run from the controller to the peripheral (side 1 to side 2), and MISO returns the other direction (side 2 to side 1). The 2.4 ns typical rise/fall time and 16 ns maximum propagation delay keep timing margins tight enough for 100 Mbps clocked interfaces. The wide supply range also helps when the rail droops under cold-crank conditions. ## Package and footprint The narrow SSOP footprint is common on mixed-signal boards where board area is at a premium. No isolated power is integrated — the part requires separate isolated supplies on each side.","metaTitle":"TI ISO7741FDBQR General-Purpose Isolator, 100 Mbps","metaDescription":"Texas Instruments ISO7741FDBQR capacitive-coupling isolator: 100 Mbps data rate, 3000 Vrms isolation, 85 kV/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-SSOP (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 5.5V","Number of Channels":"4","Base Product Number":"ISO7741","Voltage - Isolation":"3000Vrms","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-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":"$3.1700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7d3b9b841350035d4a0188e814624994.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is ISO7741FDBQR suitable for I2C isolation?","answer":"The ISO7741FDBQR has unidirectional channels only, so it cannot directly isolate bidirectional I2C data lines. For I2C isolation, you would need a part with bidirectional channels or external direction-control logic."},{"question":"What is the difference between ISO7741FDBQR and ISO7740FDBQR?","answer":"The ISO7741FDBQR has a 3/1 channel configuration (three channels on side 1, one on side 2), while the ISO7740FDBQR has a 4/0 configuration (all four channels on side 1). The ISO7741 is the right choice when you need one channel crossing the barrier in the reverse direction, such as for SPI MISO."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7741FDBQR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7741FDBQR 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}}