{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ISO7221ADRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"ISO7221ADRG4","canonicalUrl":"https://icboms.com/texas-instruments/ISO7221ADRG4","factsUrl":"https://icboms.com/api/mcp/products/ISO7221ADRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments ISO7221ADRG4, General Purpose digital isolator, Capacitive Coupling, 2 Channel, Unidirectional, 1Mbps, 2500Vrms, 8-SOIC, -40°C~125°C.","salesMarkdown":"## Capacitive-coupled dual isolator for industrial bus isolation It provides galvanic isolation up to 2500 Vrms between input and output sides, with one channel per direction (1/1). Typical propagation delay is 475 ns max each way, with pulse-width distortion held to 14 ns max. The common-mode transient immunity (CMTI) is rated at a minimum of 25 kV/µs, making it suitable for noisy industrial environments such as motor drives, inverters, and PLC I/O modules. The 8-SOIC package and surface-mount footprint fit standard isolation layouts. ## 1 Mbps data rate and 475 ns delay — timing budget for control loops At 1 Mbps, this isolator handles SPI-like clock rates up to 1 MHz and UART data at 115.2 kbaud with margin. The 475 ns max propagation delay per channel adds just under 1 µs round-trip for a read-write cycle. In a closed-loop motor control or ADC sampling path, that delay must be stacked into the loop phase margin. The 14 ns pulse-width distortion keeps duty-cycle errors small, so the isolator won't introduce significant skew on a PWM signal at moderate frequencies. ## 25 kV/µs CMTI — why it matters in a drive cabinet Common-mode transient immunity of 25 kV/µs minimum means the output won't glitch when a fast voltage step (e.g., from an IGBT switching at 10–20 kV/µs) appears across the isolation barrier. In a motor-drive application where the ground potential between controller and power stage can shift abruptly, this CMTI rating is the difference between a clean data stream and corrupted bits. The capacitive coupling architecture inherently handles these edges well, but the 25 kV/µs floor is the spec to verify against your system's worst-case dV/dt. For dual-sourcing or a pin-compatible second source, the ISO7221 family includes multiple speed and channel-count variants in the same 8-SOIC footprint — the base product number is ISO7221.","metaTitle":"TI ISO7221ADRG4 Digital Isolator, 1 Mbps, 2500 Vrms","metaDescription":"Texas Instruments ISO7221ADRG4 dual-channel digital isolator with capacitive coupling, 1 Mbps data rate, 2500 Vrms isolation, -40°C to 125°C range.","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":"Tape & Reel (TR); Cut Tape (CT)","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)","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":"$2.9600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/1712d03fe062b8dd6fd316c327e8b1ca.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ISO7221ADRG4/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/ISO7221ADRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/ISO7221ADRG4 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}}