{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1285ARZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1285ARZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1285ARZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1285ARZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM1285ARZ iCoupler digital isolator, 2-channel unidirectional, 1 Mbps data rate, 3000 Vrms isolation, 3 V to 5.5 V supply, 8-SOIC package, -40°C to 125°C.","salesMarkdown":"The ADUM1285ARZ is a two-channel, unidirectional digital isolator from Analog Devices' iCoupler series, built around magnetic coupling technology. It provides 3000 Vrms isolation between a logic input side and an output side, with both channels oriented from side 1 to side 2 (2/0 input configuration). ## 1 Mbps data rate — what it buys you With a maximum data rate of 1 Mbps, the ADUM1285ARZ is a mid-speed isolator. It comfortably handles UART at standard baud rates up to 921600, SPI clock up to 1 MHz, and most industrial fieldbus signals (RS-485, CAN at 1 Mbps). The 50 ns maximum propagation delay (tpLH/tpHL) and 10 ns pulse-width distortion mean timing skew is tight enough for synchronous interfaces at this speed. If your application needs faster isolation — say, 10 Mbps or 150 Mbps for high-speed SPI or parallel buses — you would step up to the ADUM1285BRZ or ADUM1285CRZ variants in the same package. ## 25 kV/µs CMTI — why it matters in noisy environments Common-mode transient immunity is specified at a minimum of 25 kV/µs. This is the isolator's ability to reject fast voltage transients that appear simultaneously on both sides of the isolation barrier — exactly what happens when a motor drive switches an IGBT or a relay coil de-energizes. A CMTI below the transient slew rate can cause data corruption or output glitches. At 25 kV/µs minimum, the ADUM1285ARZ handles the switching noise found in most industrial and automotive power stages without extra filtering.","metaTitle":"ADUM1285ARZ Digital Isolator, 2-Ch, 1 Mbps, 3000 Vrms","metaDescription":"ADUM1285ARZ iCoupler 2-channel unidirectional digital isolator, 1 Mbps data rate, 3000 Vrms isolation, -40°C to 125°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":"iCoupler®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"General Purpose","Series":"iCoupler®","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":"2/0","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":"$3.48","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.48000","currency":"USD"},{"qty":10,"price":"$3.12800","currency":"USD"},{"qty":25,"price":"$2.95760","currency":"USD"},{"qty":100,"price":"$2.56310","currency":"USD"},{"qty":250,"price":"$2.43164","currency":"USD"},{"qty":500,"price":"$2.18190","currency":"USD"},{"qty":1000,"price":"$1.86000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8e75547927d6f41e80c5c7dd03fbac65.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How does ADUM1285ARZ compare to ADUM1285BRZ?","answer":"The ADUM1285ARZ and ADUM1285BRZ are pin-compatible and functionally identical except for data rate. The ARZ variant is rated for 1 Mbps maximum, while the BRZ variant supports up to 25 Mbps. If your application needs faster isolation — for high-speed SPI, parallel interfaces, or time-critical feedback loops — the BRZ is the right choice. For standard UART, CAN, or low-speed SPI at 1 Mbps or below, the ARZ saves cost and meets the timing budget."},{"question":"Is ADUM1285ARZ compatible with 3.3 V logic?","answer":"Yes. At 3.3 V supply, the input thresholds are compatible with 3.3 V CMOS logic, and the outputs swing rail-to-rail. No external level translation is needed when driving or being driven by a 3.3 V MCU."},{"question":"What is the maximum data rate of ADUM1285ARZ?","answer":"The ADUM1285ARZ is rated for a maximum data rate of 1 Mbps. Propagation delay is 50 ns max, and pulse-width distortion is 10 ns max. This is sufficient for UART up to 921600 baud, 1 MHz SPI, and most industrial fieldbus signals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1285ARZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1285ARZ 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}}