{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1442ARQZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1442ARQZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1442ARQZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1442ARQZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM1442ARQZ iCoupler, General Purpose digital isolator, 4 channels unidirectional, 2500Vrms isolation, 2Mbps data rate, 2.25V-3.6V supply, -40°C to 125°C, 16-QSOP package.","salesMarkdown":"## What the 2/2 channel split means for your isolation barrier The ADUM1442ARQZ is a 4-channel digital isolator from Analog Devices' iCoupler family, using magnetic coupling to pass signals across a 2500Vrms isolation barrier. Its channel configuration — two inputs on side 1, two on side 2 — makes it the balanced option in the ADUM144x series, suited for isolating a bidirectional data bus like a UART with flow control or a two-wire interface where both sides need equal transmit and receive capability. The 2Mbps data rate and 180ns propagation delay suit moderate-speed isolation tasks; for faster protocols like full-speed SPI, you'd step up to the ADuM140x or ADuM141x families. ## Temperature range and supply — where it runs The supply range of 2.25V to 3.6V covers common 2.5V and 3.3V rails; if your design runs a 5V bus, you'll need a level translator or a different isolator variant. The 25kV/µs minimum common-mode transient immunity means it won't glitch when a motor drive or relay kicks — that's the spec that matters for noisy industrial backplanes. ## Package reality for the bench Housed in a 16-lead QSOP (the supplier device package is 16-QSOP, the case code is 16-SSOP with 0.154\" body width), this is a fine-pitch part — 0.025\" lead pitch. It reflows clean with a standard profile, but inspect the solder joints under magnification; the narrow leads hide bridges. No exposed pad, so thermal management is through the leads only — keep the ambient under 125°C and airflow reasonable. ## Lifecycle and sourcing posture It's ROHS3 compliant (no exemptions expiring).","metaTitle":"ADUM1442ARQZ Digital Isolator, 2500Vrms, 2Mbps, 16-QSOP","metaDescription":"ADI ADUM1442ARQZ iCoupler digital isolator: 4-ch unidirectional, 2500Vrms isolation, 2Mbps data rate, -40°C to 125°C.","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":"2Mbps","Technology":"Magnetic Coupling","Channel Type":"Unidirectional","Mounting Type":"Surface Mount","Isolated Power":"No","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 3.6V","Number of Channels":"4","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"2/2","Rise / Fall Time (Typ)":"2ns, 2ns","Supplier Device Package":"16-QSOP","Pulse Width Distortion (Max)":"8ns","Propagation Delay tpLH / tpHL (Max)":"180ns, 180ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.49000","currency":"USD"},{"qty":10,"price":"$5.86300","currency":"USD"},{"qty":25,"price":"$5.59040","currency":"USD"},{"qty":100,"price":"$4.85410","currency":"USD"},{"qty":250,"price":"$4.63592","currency":"USD"},{"qty":500,"price":"$4.22684","currency":"USD"},{"qty":1000,"price":"$3.68145","currency":"USD"},{"qty":2500,"price":"$3.54510","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/93aa2cbe2cc46113c0a7248fa663316e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between ADUM1442ARQZ and ADUM1441ARQZ-RL7?","answer":"Both are 4-channel unidirectional iCoupler isolators with the same 2500Vrms isolation, 2Mbps data rate, and 16-QSOP package. The difference is the channel direction split: the ADUM1442ARQZ has 2 inputs on side 1 and 2 on side 2 (2/2), while the ADUM1441ARQZ-RL7 has 3 inputs on side 1 and 1 on side 2 (3/1). Choose the 1442 for balanced bidirectional interfaces; choose the 1441 when one side is mostly receiving."},{"question":"Can ADUM1442ARQZ be used for isolated SPI communication?","answer":"At 2Mbps, the ADUM1442ARQZ is too slow for full-speed SPI (typically 10-50MHz). It can work for low-speed SPI below 2MHz, but for standard SPI rates you need a faster isolator like the ADuM140x series (10-150Mbps). The 180ns propagation delay also adds latency that may break SPI timing at higher clock rates."},{"question":"What are the recommended operating conditions for ADUM1442ARQZ?","answer":"The isolation rating is 2500Vrms. For reliable data transmission, keep the pulse width above 500ns to respect the 180ns max propagation delay and 8ns pulse-width distortion. Rise and fall times are 2ns typical."},{"question":"Is ADUM1442ARQZ RoHS compliant?","answer":"Yes, the ADUM1442ARQZ is ROHS3 compliant, meaning it meets the latest RoHS directive without exempted substances."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1442ARQZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1442ARQZ 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}}