{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7421FEDR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7421FEDR","canonicalUrl":"https://icboms.com/texas-instruments/ISO7421FEDR","factsUrl":"https://icboms.com/api/mcp/products/ISO7421FEDR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7421FEDR general-purpose digital isolator, capacitive coupling, 2 unidirectional channels, 50 Mbps data rate, 2500 Vrms isolation, 3 V to 5.5 V supply, 8-SOIC package, -40°C to 125°C.","salesMarkdown":"## 50 Mbps capacitive-coupled isolator in 8-SOIC The Texas Instruments ISO7421FEDR is a general-purpose digital isolator using capacitive coupling to transfer logic signals across a 2500 Vrms isolation barrier. It provides two unidirectional channels with one input on side 1 and one on side 2, making it a straightforward fit for isolating a single TX and RX line in SPI, UART, or GPIO isolation. The 50 Mbps data rate handles most industrial serial buses without timing margin concerns, and the 11 ns max propagation delay keeps the signal path tight for feedback loops. ## CMTI and signal integrity Common-mode transient immunity is rated at 25 kV/µs minimum, which is sufficient for most motor-drive and inverter applications where fast switching edges couple common-mode noise across the barrier. The 1.8 ns typical rise and 1.7 ns fall times keep the output edges clean, and the 3.7 ns max pulse-width distortion means the duty cycle stays close to 50% — important for PWM isolation where pulse symmetry matters.","metaTitle":"ISO7421FEDR digital isolator, 50 Mbps, 2500 Vrms, 8-SOIC","metaDescription":"TI ISO7421FEDR general-purpose digital isolator: 50 Mbps data rate, 2500 Vrms isolation, capacitive coupling, 2 unidirectional channels, -40°C to 125°C, 8-SOIC.","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":"50Mbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Number of Channels":"2","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"1/1","Rise / Fall Time (Typ)":"1.8ns, 1.7ns","Supplier Device Package":"8-SOIC","Pulse Width Distortion (Max)":"3.7ns","Propagation Delay tpLH / tpHL (Max)":"11ns, 11ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.43","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.43000","currency":"USD"},{"qty":10,"price":"$3.08300","currency":"USD"},{"qty":25,"price":"$2.91440","currency":"USD"},{"qty":100,"price":"$2.52590","currency":"USD"},{"qty":250,"price":"$2.39636","currency":"USD"},{"qty":500,"price":"$2.15024","currency":"USD"},{"qty":1000,"price":"$1.83300","currency":"USD"},{"qty":2500,"price":"$1.83300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b64de044356d26fd2966da06daa7670b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the data rate of ISO7421FEDR?","answer":"The maximum data rate is 50 Mbps, which supports SPI, UART, and general-purpose digital isolation at common industrial bus speeds."},{"question":"What is the difference between ISO7421 and ISO7421FEDR?","answer":"The ISO7421FEDR is the lead-free (ROHS3 compliant) variant of the ISO7421 base part. Functionally they are identical — same 50 Mbps data rate, 2500 Vrms isolation, and 8-SOIC package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7421FEDR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7421FEDR 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}}