{"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 The Texas Instruments ISO7741DBQ is a quad-channel, general-purpose digital isolator using capacitive coupling to transfer digital signals across an isolation barrier rated at 2500 Vrms. 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 The 85 kV/µs minimum common-mode transient immunity is the spec that matters when this isolator sits between a controller and a half-bridge gate driver. 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). ## Lifecycle and sourcing posture 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","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4823b6e05bd363491c04665aa8e36ed1.pdf","sourceUrl":null},"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":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}