{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7221CD","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7221CD","canonicalUrl":"https://icboms.com/texas-instruments/ISO7221CD","factsUrl":"https://icboms.com/api/mcp/products/ISO7221CD","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7221CD, General Purpose digital isolator, Capacitive Coupling, 2 Channel, 2500Vrms, 25Mbps, 8-SOIC, -40°C to 125°C.","salesMarkdown":"## What the 2500Vrms isolation rating buys you The ISO7221CD is a dual-channel, unidirectional digital isolator from Texas Instruments, built with capacitive coupling technology. Its headline rating is 2500Vrms isolation — that's the guaranteed withstand voltage between the input and output sides for 1 minute per UL 1577. For a field-service or repair context, this means the part provides a solid galvanic barrier for signal lines crossing a safety isolation boundary, such as in motor drives, PLC I/O modules, or medical equipment where the patient-connected side must be isolated from the mains side. ## 25Mbps data rate — fast enough for most fieldbus links At 25Mbps, the ISO7221CD handles SPI, RS-485, and CAN buses comfortably. The propagation delay is 42ns max, and pulse-width distortion stays under 2ns, so the timing budget for a closed-loop control loop stays tight. If you're replacing a failed isolator on a board that runs a 10Mbps Profibus or a 20Mbps serial link, this part fits without margin headaches. ## Common-mode transient immunity — the real-world noise spec A lower CMTI part would glitch under those conditions. This rating tells the PCB layout engineer that the capacitive coupling design is robust enough for industrial environments without needing external filtering on every channel.","metaTitle":"ISO7221CD Digital Isolator, 25Mbps, 2500Vrms, 8-SOIC","metaDescription":"ISO7221CD dual-channel digital isolator with capacitive coupling, 25Mbps data rate, 2500Vrms isolation, -40°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":"25Mbps","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":"2.8V ~ 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)":"2ns","Propagation Delay tpLH / tpHL (Max)":"42ns, 42ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.8200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1712d03fe062b8dd6fd316c327e8b1ca.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ISO7221CD/alternatives.json"},"ai":{"faq":[{"question":"What is the data rate of ISO7221CD?","answer":"The maximum data rate is 25Mbps. Typical rise and fall times are 1ns each, and propagation delay is 42ns max."},{"question":"Does ISO7221CD support bidirectional communication?","answer":"No, the channel type is unidirectional. Each of the two channels passes data in one direction only, with one input on side 1 and one input on side 2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7221CD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7221CD 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}}