{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1240ARZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1240ARZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1240ARZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1240ARZ","rawCanonicalId":null},"summary":{"shortDescription":"ADI ADUM1240ARZ iCoupler, General Purpose digital isolator, 2 unidirectional channels, 2 Mbps data rate, 3000 Vrms isolation, 2.25V–3.6V supply, -40°C to 125°C, 8-SOIC package.","salesMarkdown":"The ADI ADUM1240ARZ is a two-channel digital isolator from the iCoupler family, using magnetic coupling to pass signals across a 3000 Vrms isolation barrier. It provides two unidirectional channels (both inputs on side 1, no outputs on side 2 reversed), running at 2 Mbps with 180 ns propagation delay. The 25 kV/µs common-mode transient immunity makes it a solid choice for motor-drive or inverter interfaces where fast-switching nodes try to jump the gap. Supply range from 2.25 V to 3.6 V lets it sit on a 3.3 V or 2.5 V rail without a secondary regulator. ## 2 Mbps data rate and 180 ns propagation delay — timing budget for isolated SPI/UART At 2 Mbps, this part handles isolated SPI at up to 2 MHz clock, or a UART at 115200 baud with margin to spare. The 180 ns max propagation delay (both directions) is the number to budget in your timing closure — it adds about one-third of a bit time at 2 Mbps, so a full-duplex SPI loop through two isolators (TX and RX) sees 360 ns round-trip latency. Pulse-width distortion is held to 8 ns max, which keeps the duty cycle within spec for most PWM or timer signals. The rise/fall times are 2 ns typical, so the signal edges are clean enough for 3.3 V logic without external schmitt triggers. ## Package and reflow — SOIC-8, MSL, and what the pick-and-place needs to know That's a standard footprint — no exotic pitch or exposed pad to fight. The part ships in Tube, so if your line runs tape-and-reel only, plan for a tube-to-reel transfer or order the tape-and-reel variant (ADUM1240ARZ-RL7). MSL is not explicitly stated in the listing, but iCoupler parts in SOIC-8 typically carry MSL 1 or 2; still, if the moisture-barrier bag has been open past the floor-life window, bake before reflow — popcorning a $3 isolator on a $200 board is a bad day. ## Lifecycle and compliance — active, ROHS3, no LTB window to chase The iCoupler series has a long production history and no PCN activity flagged for this order code. For dual-sourcing or a higher-isolation alternative, the ADUM1245ARSZ offers 3750 Vrms in the same pinout and data rate, though in a different package (8-SOIC with wider creepage).","metaTitle":"ADUM1240ARZ Digital Isolator, 2Ch, 2Mbps, 3000Vrms, SOIC-8","metaDescription":"ADUM1240ARZ iCoupler digital isolator: 2 unidirectional channels, 2 Mbps data rate, 3000 Vrms isolation, -40°C to 125°C, SOIC-8. Active, 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":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 3.6V","Number of Channels":"2","Voltage - Isolation":"3000Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"2/0","Rise / Fall Time (Typ)":"2ns, 2ns","Supplier Device Package":"8-SOIC","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":"$5.28","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.28000","currency":"USD"},{"qty":10,"price":"$4.74300","currency":"USD"},{"qty":25,"price":"$4.48400","currency":"USD"},{"qty":100,"price":"$3.88600","currency":"USD"},{"qty":250,"price":"$3.68668","currency":"USD"},{"qty":500,"price":"$3.30804","currency":"USD"},{"qty":1000,"price":"$2.82000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4aefb66043e54be1d6472f25241387f6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is ADUM1240ARZ RoHS compliant?","answer":"Yes, the ADUM1240ARZ is ROHS3 compliant, meaning it meets the EU RoHS directive including the four phthalates added in 2015."},{"question":"What is the closest functional second-source for ADUM1240ARZ?","answer":"The ADUM1245ARSZ is the closest functional alternative within the iCoupler family: same 2 Mbps data rate, same 2/0 channel configuration, same 180 ns propagation delay and 25 kV/µs CMTI, but with 3750 Vrms isolation and a different package (8-SOIC with wider body). Verify the pinout and creepage distance before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1240ARZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1240ARZ 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}}