{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM3481ARSZ-RL7","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM3481ARSZ-RL7","canonicalUrl":"https://icboms.com/analog-devices/ADUM3481ARSZ-RL7","factsUrl":"https://icboms.com/api/mcp/products/ADUM3481ARSZ-RL7","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM3481ARSZ-RL7, iCoupler series, 4-channel general-purpose digital isolator, 3750Vrms isolation, 1Mbps data rate, unidirectional, 20-SSOP package, -40°C to 125°C.","salesMarkdown":"## 4-channel isolator with 125°C capability The ADUM3481ARSZ-RL7 is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler series, using magnetic coupling to transfer logic signals across a 3750Vrms isolation barrier. It operates from 1.8V to 5.5V on the low-voltage side and 3V to 5.5V on the high-voltage side, with a maximum data rate of 1Mbps. The 3/1 input-side/side-2 channel count means three channels drive from side 1 to side 2, one channel drives the opposite direction — a common configuration for SPI or UART isolation where the chip-select or data-direction signal runs back. ## Timing and transient immunity — the practical limits Propagation delay is 90ns max in either direction, with a pulse-width distortion ceiling of 6ns. That 90ns round-trip eats into the timing budget for a 1Mbps SPI clock — at 1Mbps the bit period is 1µs, so the isolator consumes about 18% of the window in one direction. For slower UART or GPIO isolation at 115.2 kbps or below, the delay is negligible. The common-mode transient immunity is rated at 25kV/µs minimum, which handles the noise spikes from a motor-drive inverter or a relay bank without corrupting the output state. ## Package and supply rails Housed in a 20-SSOP with 0.209-inch body width (5.30mm), surface-mount only. The supply pins accept 1.8V to 5.5V on one side and 3V to 5.5V on the other, so it can bridge a 1.8V MCU to a 3.3V or 5V peripheral. No isolated power on-chip — you still need a separate DC-DC or an isolated module to power the secondary side if the barrier crosses a ground potential difference.","metaTitle":"ADUM3481ARSZ-RL7 iCoupler Digital Isolator, 3750Vrms, 1Mbps","metaDescription":"ADI ADUM3481ARSZ-RL7 iCoupler 4-channel digital isolator, 3750Vrms isolation, 1Mbps data rate, -40°C to 125°C, 20-SSOP. 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":"Tape & Reel (TR); Cut Tape (CT)","Data Rate":"1Mbps","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":"1.8V ~ 5.5V, 3V ~ 5.5V","Number of Channels":"4","Voltage - Isolation":"3750Vrms","Operating Temperature":"-40°C ~ 125°C","Inputs - Side 1/Side 2":"3/1","Rise / Fall Time (Typ)":"2.5ns, 2.5ns","Supplier Device Package":"20-SSOP","Pulse Width Distortion (Max)":"6ns","Propagation Delay tpLH / tpHL (Max)":"90ns, 90ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.49","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.49000","currency":"USD"},{"qty":10,"price":"$4.92800","currency":"USD"},{"qty":25,"price":"$4.65880","currency":"USD"},{"qty":100,"price":"$4.03750","currency":"USD"},{"qty":250,"price":"$3.83044","currency":"USD"},{"qty":500,"price":"$3.43704","currency":"USD"},{"qty":1000,"price":"$2.89870","currency":"USD"},{"qty":2500,"price":"$2.75376","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/ADuM3480_3481_3482.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is ADUM3481ARSZ-RL7's listed type and series?","answer":"The type is General Purpose digital isolator, and the series is iCoupler."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM3481ARSZ-RL7","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM3481ARSZ-RL7 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}}