{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1440ARSZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1440ARSZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1440ARSZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1440ARSZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM1440ARSZ iCoupler, General Purpose digital isolator, 4 unidirectional channels, 3750Vrms isolation, 2 Mbps data rate, 2.25V-3.6V supply, -40°C to 125°C, 20-SSOP package, Tube.","salesMarkdown":"## 3750Vrms isolation in a 20-SSOP — what it buys you The ADUM1440ARSZ is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler series, using magnetic coupling to deliver 3750Vrms isolation in a 20-SSOP package. The four channels are all oriented Side 1 to Side 2 (4/0), so this variant is strictly one-way — no bidirectional or mixed-direction option in this order code. Data rate is rated at 2 Mbps, with typical rise/fall times of 2 ns and a maximum propagation delay of 180 ns in either direction. That puts it in the low-to-mid speed isolation segment — think GPIO isolation, I2C bus repeaters, or slow SPI links, not high-throughput data streams. ## Unidirectional channels — design-in check With all four inputs on Side 1 and all outputs on Side 2, this part is a straight signal-forwarding isolator. No bidirectional data paths, no direction-control pins. If your isolated interface needs a return channel (e.g., SPI MISO back to the controller), you will need a second device or a different ADUM variant with mixed channel directions. The 2 Mbps data rate and 180 ns propagation delay mean timing closure is straightforward for sub-1 MHz clocked interfaces. Pulse-width distortion is held to 8 ns max, so duty-cycle-sensitive signals like PWM or Manchester-encoded data retain reasonable integrity across the barrier. No isolated power is provided on-chip — each side requires its own local supply rail (2.25V to 3.6V). Plan for separate LDOs or isolated DC-DC modules to power the secondary side if the primary rail is not available there.","metaTitle":"ADUM1440ARSZ Digital Isolator, 3750Vrms, 2 Mbps, 20-SSOP","metaDescription":"ADI ADUM1440ARSZ iCoupler digital isolator: 4 unidirectional channels, 3750Vrms isolation, 2 Mbps data rate, -40°C to 125°C. Active, ROHS3.","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":"4/0","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":"What is the equivalent part for ADUM1440ARSZ?","answer":"Within the same iCoupler family, the ADUM1440BRZ is a higher-speed variant (10 Mbps vs 2 Mbps) in the same 20-SSOP footprint and pinout. For a direct speed match, the ADUM1440ARSZ has no exact pin-compatible second source outside the ADUM1440 series; the ARSZ suffix denotes the 2 Mbps speed grade."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1440ARSZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1440ARSZ 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}}