{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM2251ARIZ-RL","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM2251ARIZ-RL","canonicalUrl":"https://icboms.com/analog-devices/ADUM2251ARIZ-RL","factsUrl":"https://icboms.com/api/mcp/products/ADUM2251ARIZ-RL","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices iCoupler ADUM2251ARIZ-RL, I²C digital isolator, 2 channels (2/1 bidirectional), 1Mbps data rate, 5000Vrms isolation, 3V to 5.5V supply, -40°C to 105°C, 16-SOIC-IC, Tape & Reel.","salesMarkdown":"## The I²C isolator that does not force you to redesign the bus The ADUM2251ARIZ-RL is an Analog Devices iCoupler magnetic-coupling digital isolator built specifically for I²C buses. It integrates direction control internally — Side 1 has two bidirectional channels (SDA, SCL) and Side 2 has one unidirectional output. That 2/1 input count matches the standard I²C isolator topology. The 5000Vrms isolation rating is reinforced-grade. Data rate is 1Mbps. The 5000Vrms isolation voltage drives the creepage and clearance distances on the PCB. The common-mode transient immunity is 25kV/µs minimum, so this part holds up in motor-drive or inverter environments where fast-switching SiC or IGBT stages slam the bus with common-mode edges. No isolated power on-chip — you still need a separate isolated DC-DC or a third-party isolated supply for the secondary side if the bus is referenced to a different ground. ## Temperature range and field life The supply voltage range is 3V to 5.5V, so it runs on either a 3.3V or 5V I²C rail without a level-shifter — handy when the master is 3.3V and a sensor on the isolated side is 5V. Pulse-width distortion is 145ns max on the bidirectional channels and 85ns max on the unidirectional channel — tight enough to avoid bit errors at 1Mbps, but if you are running a long bus with many slaves, budget that skew into the timing.","metaTitle":"ADUM2251ARIZ-RL I²C Digital Isolator, 5000Vrms, 1Mbps","metaDescription":"ADI ADUM2251ARIZ-RL iCoupler I²C isolator: 5000Vrms isolation, 1Mbps data rate, 2 channels (2/1 bidirectional), -40°C to 105°C, 16-SOIC. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"iCoupler®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"I²C","Series":"iCoupler®","Package":"Tape & Reel (TR); Cut Tape (CT)","Data Rate":"1Mbps","Technology":"Magnetic Coupling","Channel Type":"Bidirectional, Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Number of Channels":"2","Voltage - Isolation":"5000Vrms","Operating Temperature":"-40°C ~ 105°C","Inputs - Side 1/Side 2":"2/1","Supplier Device Package":"16-SOIC-IC","Pulse Width Distortion (Max)":"145ns, 85ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.65","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.65000","currency":"USD"},{"qty":10,"price":"$7.81700","currency":"USD"},{"qty":25,"price":"$7.45360","currency":"USD"},{"qty":100,"price":"$6.47210","currency":"USD"},{"qty":250,"price":"$6.18120","currency":"USD"},{"qty":500,"price":"$5.63580","currency":"USD"},{"qty":1000,"price":"$4.90860","currency":"USD"},{"qty":2000,"price":"$4.72680","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/ADuM2250_ADuM2251.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is ADUM2251ARIZ-RL a replacement for ADUM2251ARIZ?","answer":"The ADUM2251ARIZ-RL is the Tape & Reel packaging variant of the same ADUM2251 die. The ADUM2251ARWZ is the tube-packaged version. All three share the same I²C isolation core, 5000Vrms rating, and 1Mbps data rate — the only difference is the shipping medium."},{"question":"Does ADUM2251ARIZ-RL require isolated power?","answer":"No. The ADUM2251ARIZ-RL does not include an integrated isolated DC-DC converter. You must provide separate isolated power supplies on each side of the isolation barrier (e.g., a separate isolated module or a third-party isolated supply)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM2251ARIZ-RL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM2251ARIZ-RL 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}}