{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISOW7742FDFMR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISOW7742FDFMR","canonicalUrl":"https://icboms.com/texas-instruments/ISOW7742FDFMR","factsUrl":"https://icboms.com/api/mcp/products/ISOW7742FDFMR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISOW7742FDFMR, ISOW774x series, General Purpose quad-channel digital isolator with integrated isolated DC/DC converter, 100 Mbps, Capacitive Coupling, 5000 Vrms isolation, 2.97V~3.63V / 4.5V~5.5V supply, 20-SOIC package, -40°C to 125°C.","salesMarkdown":"## Quad-channel isolator with on-chip isolated power — what it saves on the BOM The Texas Instruments ISOW7742FDFMR is a general-purpose, quad-channel digital isolator in the ISOW774x family that integrates an isolated DC/DC converter on the same package. That integrated power stage is the headline differentiator: it delivers a regulated output voltage to the isolated side without a separate transformer, rectifier, or LDO, which shrinks the bill of materials and board area for industrial fieldbus interfaces, motor-drive encoder feedback, and isolated SPI or UART links. The part uses capacitive coupling for the signal path and is rated for 5000 Vrms isolation with a data rate of 100 Mbps, making it suitable for high-speed communication across a reinforced insulation barrier. The 2/2 input-to-output channel configuration provides two channels in each direction, which maps cleanly to a full-duplex SPI bus (MISO, MOSI, SCLK, CS) or a pair of bidirectional control signals. ## 85 kV/µs CMTI — the spec that decides motor-drive survivability Common-mode transient immunity is the parameter that determines whether the isolator holds data integrity when a high dV/dt event slams the barrier — think an IGBT switching 600 V in tens of nanoseconds. The ISOW7742FDFMR specifies a minimum CMTI of 85 kV/µs. For context, industrial motor drives and inverter stages typically generate common-mode slew rates in the 10–50 kV/µs range, so this part provides healthy margin. The 5000 Vrms isolation rating supports reinforced insulation per IEC 60747-17, which is the usual requirement for mains-connected equipment. Propagation delay is symmetrical at 15.7 ns max for both tpLH and tpHL, and pulse-width distortion is held to 5 ns max. That symmetry matters for clocked interfaces where duty-cycle distortion eats into setup-and-hold margins. Rise and fall times are 2.5 ns and 2.4 ns typical, which keeps the signal edges clean at 100 Mbps without excessive ringing. ## 20-SOIC footprint and temperature range Surface-mount assembly with standard reflow profiles applies; no special handling beyond MSL precautions.","metaTitle":"TI ISOW7742FDFMR Quad Isolator, 100 Mbps, 5000 Vrms","metaDescription":"TI ISOW7742FDFMR general-purpose quad-channel isolator with integrated isolated power. 100 Mbps data rate, 5000 Vrms isolation, 85 kV/µs CMTI.","metaKeywords":null},"attributes":{"series":"ISOW774x","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"General Purpose","Series":"ISOW774x","Package":"Tray; Cut Tape (CT)","Data Rate":"100Mbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"Yes","Package / Case":"20-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.97V ~ 3.63V, 4.5V ~ 5.5V","Number of Channels":"4","Voltage - Isolation":"5000Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"2/2","Rise / Fall Time (Typ)":"2.5ns, 2.4ns","Supplier Device Package":"20-SOIC","Pulse Width Distortion (Max)":"5ns","Propagation Delay tpLH / tpHL (Max)":"15.7ns, 15.7ns","Common Mode Transient Immunity (Min)":"85kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.06","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.06000","currency":"USD"},{"qty":10,"price":"$9.98900","currency":"USD"},{"qty":25,"price":"$9.52440","currency":"USD"},{"qty":100,"price":"$8.26990","currency":"USD"},{"qty":250,"price":"$7.89820","currency":"USD"},{"qty":850,"price":"$7.20129","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/add794b90eefb924fc85178c1f0cc7e0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How does ISOW7742FDFMR compare to ISOW7741FDFMR?","answer":"The ISOW7741FDFMR is the three-channel variant (3/1 input/output configuration) in the same ISOW774x family, while the ISOW7742FDFMR provides four channels with a 2/2 split. Both share the same 5000 Vrms isolation, 100 Mbps data rate, integrated isolated power, and 20-SOIC package. The choice depends on whether the application needs three forward channels plus one reverse, or two in each direction."},{"question":"Does ISOW7742FDFMR have a direct replacement or equivalent?","answer":"The ISO7741QDWRQ1 is a quad-channel isolator with 5000 Vrms isolation and 100 Mbps data rate, but it lacks the integrated isolated power supply and carries an automotive AEC-Q100 qualification. The ISO6742DWR is a 50 Mbps part without integrated power. For a functional equivalent with integrated power, the ISOW774x family remains the only option."},{"question":"What are the exact specifications of ISOW7742FDFMR?","answer":"The ISOW7742FDFMR is a general-purpose quad-channel digital isolator using capacitive coupling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISOW7742FDFMR","citationPolicyUrl":"https://icboms.com/llms.txt","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}