{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7821FDWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7821FDWR","canonicalUrl":"https://icboms.com/texas-instruments/ISO7821FDWR","factsUrl":"https://icboms.com/api/mcp/products/ISO7821FDWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7821FDWR, General Purpose digital isolator, Capacitive Coupling, 2 channels, 100Mbps data rate, 5700Vrms isolation, 2.25V to 5.5V supply, -55°C to 125°C, 16-SOIC package.","salesMarkdown":"## 5700Vrms isolation in a 16-SOIC — what that buys you The Texas Instruments ISO7821FDWR is a two-channel, unidirectional digital isolator using capacitive coupling to deliver 5700Vrms of galvanic isolation in a 16-SOIC package. It supports a data rate up to 100Mbps, with propagation delays of 16ns max and pulse-width distortion held to 4.6ns. The supply range spans 2.25V to 5.5V, so it can bridge 3.3V and 5V logic domains without a separate level shifter. ## Common-mode transient immunity — the spec that keeps data clean in noisy environments With a minimum common-mode transient immunity (CMTI) of 100kV/µs, the ISO7821FDWR can reject fast voltage transients that couple across the isolation barrier. In a motor-drive or solar-inverter design, where switching edges on the high-voltage side can slam the isolation barrier with several thousand volts per microsecond, this rating means the output stays in the correct logic state rather than glitching. The 2.4ns typical rise/fall time also keeps the signal edges sharp enough for 100Mbps throughput without excessive ringing. The wide supply range and temperature grade also mean it fits across multiple BOM variants without requalification.","metaTitle":"ISO7821FDWR Digital Isolator, 5700Vrms, 100Mbps, 16-SOIC","metaDescription":"Texas Instruments ISO7821FDWR: 2-channel capacitive isolator, 5700Vrms isolation, 100Mbps data rate, -55°C to 125°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"General Purpose","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-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 5.5V","Number of Channels":"2","Voltage - Isolation":"5700Vrms","Operating Temperature":"-55°C ~ 125°C","Inputs - Side 1/Side 2":"1/1","Rise / Fall Time (Typ)":"2.4ns, 2.4ns","Supplier Device Package":"16-SOIC","Pulse Width Distortion (Max)":"4.6ns","Propagation Delay tpLH / tpHL (Max)":"16ns, 16ns","Common Mode Transient Immunity (Min)":"100kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.4","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.40000","currency":"USD"},{"qty":10,"price":"$5.74700","currency":"USD"},{"qty":25,"price":"$5.43360","currency":"USD"},{"qty":100,"price":"$4.70910","currency":"USD"},{"qty":250,"price":"$4.46760","currency":"USD"},{"qty":500,"price":"$4.00876","currency":"USD"},{"qty":1000,"price":"$3.38087","currency":"USD"},{"qty":2000,"price":"$3.21183","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/2ada8d3ed39e6614f0206143730f6967.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is ISO7821FDWR suitable for 3.3V or 5V operation?","answer":"The unidirectional channel configuration (one input on side 1, one on side 2) lets it bridge different voltage domains without additional translation."},{"question":"What is the difference between ISO7821 and ISO7821F?","answer":"The 'F' suffix in ISO7821FDWR indicates a fail-safe output state: when the input-side supply is off or the input signal is missing, the output defaults to a known logic-high level. The non-F variant (ISO7821) does not have this fail-safe behavior. Both share the same 5700Vrms isolation, 100Mbps data rate, and package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7821FDWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7821FDWR 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}}