{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7741DBQ","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7741DBQ","canonicalUrl":"https://icboms.com/texas-instruments/ISO7741DBQ","factsUrl":"https://icboms.com/api/mcp/products/ISO7741DBQ","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7741DBQ, General Purpose digital isolator, Capacitive Coupling, 4-channel unidirectional, 100Mbps data rate, 2500Vrms isolation, 16-SSOP package, -55°C to 125°C operating temperature.","salesMarkdown":"## Quad-channel digital isolator for noisy industrial buses It is designed for applications where galvanic isolation is required between communication interfaces — think isolated SPI, UART, RS-485, or CAN buses in motor drives, grid-tied inverters, PLC I/O modules, and medical equipment. The 4-channel unidirectional configuration (3 channels on side 1, 1 channel on side 2) suits the typical data/clock/select plus one feedback signal arrangement. ## 100 Mbps data rate — timing budget for SPI and UART At 100 Mbps the ISO7741DBQ handles 50 MHz SPI clocks cleanly, with a typical propagation delay of 16 ns and pulse-width distortion held to 4.9 ns max. The 2.4 ns rise/fall times keep the eye open across a short backplane trace, but the fast edges also mean you want to keep the output trace short or add a small series resistor to damp ringing — especially if the load is a high-impedance CMOS input on the other side of the barrier. ## 85 kV/µs CMTI — surviving the switching node Fast SiC or GaN switching edges can inject several kV/µs across the barrier; if the isolator's CMTI is too low, the output glitches and the power stage sees a spurious on/off command. At 85 kV/µs this part has margin for most IGBT and SiC designs up to the 10-20 kV/µs range that appears in hard-switched converters. ## Supply range and dual-voltage operation The supply range spans 2.25 V to 5.5 V on both sides, which means you can run the input side at 3.3 V and the output side at 5.0 V without a level shifter — useful when isolating a 3.3 V MCU from a 5 V peripheral bus. The part does not include an integrated DC-DC converter, so each side needs its own isolated power rail (e.g., a transformer-coupled push-pull or an isolated module). For production BOMs this is a low-risk line item — no urgency to qualify a drop-in replacement.","metaTitle":"TI ISO7741DBQ Quad-Channel Digital Isolator, 100 Mbps","metaDescription":"TI ISO7741DBQ general-purpose capacitive-coupling digital isolator: 100 Mbps data rate, 2500 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":"Tube","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":"2500Vrms","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":"$3.8100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4823b6e05bd363491c04665aa8e36ed1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ISO7741DBQ/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to ISO7741DBQ?","answer":"Within TI's own ISO774x family, the ISO7741FDBQ (with fail-safe output mode) and ISO7741DW (SOIC-16 wide-body) share the same basic isolation and data-rate specs but differ in package or output behavior. For a cross-manufacturer equivalent, the Silicon Labs Si8641BB-B-IS1 (also quad-channel, 150 Mbps, SOIC-16 narrow) is a functional alternative — verify the pinout and supply range against your layout before substituting."},{"question":"Does ISO7741DBQ support dual supply voltages?","answer":"Yes. Each side of the isolation barrier has its own supply pin, and the 2.25 V to 5.5 V range allows different voltages on side 1 and side 2 — for example, 3.3 V on the controller side and 5.0 V on the peripheral side. No external level translator is needed."},{"question":"What is the maximum data rate of ISO7741DBQ?","answer":"The ISO7741DBQ is rated for a maximum data rate of 100 Mbps. At this rate the typical propagation delay is 16 ns and pulse-width distortion is 4.9 ns max."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7741DBQ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7741DBQ when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}