{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1281WARZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1281WARZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1281WARZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1281WARZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM1281WARZ, iCoupler® 2-channel unidirectional digital isolator, 1Mbps data rate, 3000Vrms isolation, 25kV/µs CMTI, 3V–5.5V supply, -40°C to 125°C, 8-SOIC package, tube.","salesMarkdown":"## Two-channel unidirectional isolation for automotive signal chains The ADUM1281WARZ: It provides 3000Vrms galvanic isolation between two independent supply domains, with one channel per side (one input on side 1, one input on side 2). ## 1Mbps data rate with 50ns propagation delay Rise and fall times are symmetrical at 2.5ns typical. This timing budget suits isolated SPI, UART, and general-purpose GPIO isolation at moderate speeds — the 1Mbps ceiling is a comfortable fit for CAN transceiver isolation (typically 500kbps to 1Mbps) and for breaking ground loops in sensor readout lines without introducing excessive skew. The part does not include an integrated isolated DC-DC converter (isolated power: No), so each side requires its own local supply rail — a clean 3.3V or 5V from the system regulator, with the usual 0.1µF decoupling caps placed close to the supply pins.","metaTitle":"ADUM1281WARZ Digital Isolator, 2-Ch, 1Mbps, 3000Vrms, SOIC-8","metaDescription":"ADUM1281WARZ automotive-grade 2-channel digital isolator with 3000Vrms isolation, 1Mbps data rate, 25kV/µs CMTI, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"General Purpose","Grade":"Automotive","Package":"Tube","Data Rate":"1Mbps","Technology":"Magnetic 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":"3000Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"1/1","Rise / Fall Time (Typ)":"2.5ns, 2.5ns","Supplier Device Package":"8-SOIC","Pulse Width Distortion (Max)":"10ns","Propagation Delay tpLH / tpHL (Max)":"50ns, 50ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.27","priceTiers":[{"qty":1,"price":"$5.27000","currency":"USD"},{"qty":10,"price":"$4.73500","currency":"USD"},{"qty":25,"price":"$4.47680","currency":"USD"},{"qty":100,"price":"$3.87990","currency":"USD"},{"qty":250,"price":"$3.68096","currency":"USD"},{"qty":500,"price":"$3.30290","currency":"USD"},{"qty":1000,"price":"$2.78558","currency":"USD"},{"qty":2500,"price":"$2.64630","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8e75547927d6f41e80c5c7dd03fbac65.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ADUM1281WARZ/alternatives.json"},"ai":{"faq":[{"question":"Is ADUM1281WARZ a direct replacement for ADUM1201?","answer":"No. The ADUM1201WSRZ is a 1Mbps automotive-grade 2-channel isolator with a 2500Vrms isolation rating and a 150ns propagation delay, while the ADUM1281WARZ offers 3000Vrms isolation and a faster 50ns propagation delay. Pinout and channel configuration differ — the ADUM1201 has both inputs on side 1, whereas the ADUM1281 has one input on each side. They are not drop-in replacements."},{"question":"Does ADUM1281WARZ require an external isolated power supply?","answer":"Yes. The part does not include an integrated isolated DC-DC converter, so each side of the isolation barrier needs its own local supply rail (3V to 5.5V)."},{"question":"Is ADUM1281WARZ compatible with 3.3V systems?","answer":"Yes, the supply voltage range extends down to 3V, so it works directly with 3.3V logic without level translation."},{"question":"What is the difference between ADUM1281WARZ and ADUM1281BRZ?","answer":"Both share the same 1Mbps data rate, 3000Vrms isolation, and 8-SOIC package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1281WARZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1281WARZ 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}}