{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1442ARSZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1442ARSZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1442ARSZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1442ARSZ","rawCanonicalId":null},"summary":{"shortDescription":"ADI iCoupler® ADUM1442ARSZ, General Purpose 4-Ch Digital Isolator, 3750Vrms, 2Mbps, Unidirectional, 2.25V–3.6V, -40°C to 125°C, 20-SSOP.","salesMarkdown":"## Four-channel isolator for the 3.3V signal boundary The ADUM1442ARSZ is a 4-channel, unidirectional digital isolator from ADI's iCoupler® family, built with magnetic coupling technology. Data rate is 2Mbps — enough for GPIO, SPI up to 2MHz, and UART handshake lines, but not for full-speed USB or gigabit Ethernet. ## Channel count and direction — 2/2 split Four channels with a 2/2 input-side split (two inputs on side 1, two on side 2) means this part handles bidirectional isolation in a single package — two signals crossing the barrier each way. That is handy for isolated SPI (MISO, MOSI, SCK, CS) where you need two lines each direction, or for breaking ground loops on a pair of digital I/O lines. The unidirectional channel type is standard for iCoupler; if you need bidirectional (I²C-style) isolation, look at the ADUM1250 family instead. ## Timing and transient immunity Propagation delay is 180ns max (both directions), and pulse-width distortion is 8ns max — tight enough for most 2Mbps signalling without skew headaches. The 25kV/µs common-mode transient immunity (CMTI) is the spec that matters in motor drives and inverters: fast voltage slewing on the high-voltage side can couple through parasitic capacitance and flip bits in a weaker isolator. 25kV/µs is a solid industrial-grade figure; you can run this across a 600V DC bus with a 50ns rise time and the data stays clean. Rise/fall times are 2ns typical, so signal integrity on the output side is crisp without excessive edge rates that cause EMI. ## No isolated power — plan your rail This part does not include an integrated isolated DC-DC converter (Isolated Power: No). You need a separate isolated supply for the secondary side — either a dedicated iso-brick like the ADuM5000 or a discrete flyback. The supply voltage range of 2.25V to 3.6V on each side is wide enough to run from a 3.3V rail with margin, or from a 2.5V rail if the logic family allows. If you need a one-chip solution with built-in power, step up to the ADuM5401 series. ## Active lifecycle — no obsolescence worry ADI lists the ADUM1442ARSZ as Active. No NRND flag, no last-time-buy notice. ROHS3 compliant. For a production BOM line, this means you can qualify it for new designs without scheduling a second-source qualification down the road. The iCoupler platform is mature and widely second-sourced in function (though not pin-for-pin) by TI's ISO72xx and Silicon Labs' Si86xx families — but if you need an exact ADI drop-in, this is it.","metaTitle":"ADUM1442ARSZ iCoupler Digital Isolator, 3750Vrms, 2Mbps","metaDescription":"ADUM1442ARSZ general-purpose 4-channel digital isolator, 3750Vrms isolation, 2Mbps data rate, -40°C to 125°C. Active lifecycle, ROHS3 compliant.","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":"20-SSOP (0.209\\\", 5.30mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 3.6V","Number of Channels":"4","Voltage - Isolation":"3750Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"2/2","Rise / Fall Time (Typ)":"2ns, 2ns","Supplier Device Package":"20-SSOP","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":"$8.1","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$8.10000","currency":"USD"},{"qty":10,"price":"$7.31800","currency":"USD"},{"qty":25,"price":"$6.97760","currency":"USD"},{"qty":100,"price":"$6.05860","currency":"USD"},{"qty":250,"price":"$5.78628","currency":"USD"},{"qty":500,"price":"$5.27574","currency":"USD"},{"qty":1000,"price":"$4.59500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/93aa2cbe2cc46113c0a7248fa663316e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the ADUM1442ARSZ compatible with 3.3V logic?","answer":"Yes. The supply voltage range is 2.25V to 3.6V, so it runs directly from a 3.3V rail on both sides. It also works with 2.5V logic without a level shifter."},{"question":"Does the ADUM1442ARSZ require an external isolated power supply?","answer":"Yes. You must provide a separate isolated supply for the secondary side."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1442ARSZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1442ARSZ 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}}