{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7221AD","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7221AD","canonicalUrl":"https://icboms.com/texas-instruments/ISO7221AD","factsUrl":"https://icboms.com/api/mcp/products/ISO7221AD","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7221AD, General Purpose digital isolator, 2 channels, 1/1 input-side/side-2, 1Mbps data rate, capacitive coupling, 2500Vrms isolation, 8-SOIC package, -40°C~125°C, Tube.","salesMarkdown":"## Two-channel capacitive isolator for 1 Mbps industrial links The ISO7221AD: One channel runs from side 1 to side 2, the other from side 2 to side 1, giving you bidirectional isolation in a single 8-SOIC package. The 14 ns maximum pulse-width distortion keeps the mark-space ratio tight enough for UART-based protocols like RS-485 at 115.2 kbaud. Rise and fall times are typically 1 ns, which keeps edge-rate-induced common-mode coupling low in noisy environments. ## 25 kV/µs CMTI — the real noise-rejection spec Capacitive coupling inherently offers better CMTI than optocouplers at this data rate, and the ISO7221AD delivers that advantage without needing an isolated secondary supply — the Isolated Power flag is No. There is no official successor because none is needed. An equivalent with a different speed grade would be a pin-compatible drop-in, but verify the propagation delay against your timing budget.","metaTitle":"TI ISO7221AD General Purpose Digital Isolator, 1 Mbps","metaDescription":"Texas Instruments ISO7221AD dual-channel digital isolator with capacitive coupling, 1 Mbps data rate, 2500 Vrms isolation, -40°C to 125°C. Active lifecycle.","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":"1Mbps","Technology":"Capacitive Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Number of Channels":"2","Base Product Number":"ISO7221","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C~125°C","Inputs - Side 1/Side 2":"1/1","Rise / Fall Time (Typ)":"1ns, 1ns","Supplier Device Package":"8-SOIC","Pulse Width Distortion (Max)":"14ns","Propagation Delay tpLH / tpHL (Max)":"475ns, 475ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.9000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1712d03fe062b8dd6fd316c327e8b1ca.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ISO7221AD/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between ISO7221AD and ISO7221?","answer":"ISO7221 is the base product number covering the whole family. The 'AD' suffix specifically identifies the 8-SOIC package in Tube format. Other suffixes may indicate different speed grades, packages, or tape-and-reel packaging — all share the same capacitive isolation core and pinout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7221AD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7221AD 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}}