{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM3481ARSZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM3481ARSZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM3481ARSZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM3481ARSZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM3481ARSZ, iCoupler series, 4-channel general-purpose digital isolator, 3750Vrms isolation, 1Mbps data rate, magnetic coupling, unidirectional, 20-SSOP package, -40°C to 125°C.","salesMarkdown":"## Four-channel digital isolator for industrial signal isolation Three channels run from side 1 to side 2, one channel runs the opposite direction — a 3/1 split that suits typical applications like isolating a microcontroller's UART or SPI lines where the bulk of data flows one way. The 1Mbps data rate handles slower serial buses comfortably; don't plan on pushing it past that for high-speed interfaces. ## 3750Vrms isolation and industrial temperature range Rated for 3750Vrms isolation, this part meets the basic insulation requirements for many industrial, medical, and motor-drive applications where you need to break ground loops or protect low-voltage logic from high-side transients. Common-mode transient immunity of 25kV/µs minimum means it won't glitch when a motor drive or relay kicks. ## Supply flexibility and timing margins The supply range is split: side 1 runs from 1.8V to 5.5V, side 2 from 3V to 5.5V. That 1.8V capability on the input side is handy when isolating a low-voltage FPGA or MCU bank. Propagation delay is 90ns max each way, with 6ns pulse-width distortion — tight enough for 1Mbps signalling without bit-width errors. Rise/fall times of 2.5ns typical keep edge rates clean for short PCB traces.","metaTitle":"ADUM3481ARSZ iCoupler Digital Isolator, 3750Vrms, 1Mbps","metaDescription":"ADUM3481ARSZ 4-channel general-purpose digital isolator with magnetic coupling, 3750Vrms isolation, 1Mbps 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":"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 the difference between ADUM3481ARSZ and ADUM3480ARSZ?","answer":"The ADUM3480ARSZ is a 3-channel version of the same iCoupler family, while the ADUM3481ARSZ provides 4 channels with a 3/1 direction split. Both share the same 3750Vrms isolation, 1Mbps data rate, and 20-SSOP package — the channel count and direction assignment are the deciding factors."},{"question":"Can ADUM3481ARSZ be used for isolating I2C signals?","answer":"The ADUM3481ARSZ is a unidirectional isolator, so it cannot directly handle the bidirectional data line (SDA) of I2C. For I2C isolation you would need a part with bidirectional channel support or external circuitry to handle the bus direction reversal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM3481ARSZ","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 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}}