{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM1445ARSZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM1445ARSZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM1445ARSZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM1445ARSZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM1445ARSZ, iCoupler series, Digital Isolator, General Purpose, 4-Channel Unidirectional, 3750Vrms Isolation, 2Mbps Data Rate, 2.25V-3.6V Supply, -40°C to 125°C, 20-SSOP.","salesMarkdown":"## Four-channel unidirectional isolation in a 20-SSOP The ADUM1445ARSZ is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler series, using magnetic coupling to provide 3750Vrms galvanic isolation across the barrier. It is a general-purpose device rated for 2Mbps data rate with 25kV/µs minimum common-mode transient immunity, making it suitable for breaking ground loops and protecting low-voltage logic in industrial fieldbus, motor-drive feedback, and isolated sensor interfaces. The 3750Vrms isolation rating is a 1-minute withstand test per basic insulation requirements — enough for reinforced isolation in many 240VAC mains-connected designs when combined with proper creepage on the PCB. The 25kV/µs common-mode transient immunity means the part will not latch or corrupt data when a motor drive or inverter switches a high-voltage rail at microsecond edges; this is the spec that separates an isolator that works in a VFD from one that glitches. With all four channels on the same side of the barrier (4/0 input/output configuration), this variant is intended for applications where all isolated signals travel in one direction — for example, reading four digital sensor outputs or passing a parallel control word from a low-voltage controller to a high-side gate driver. ## Supply range and timing — fitting the 3.3V logic rail The 2.25V to 3.6V supply range lets the ADUM1445ARSZ run directly from a 3.3V or 2.5V rail without an extra regulator. Propagation delay is 180ns max each direction, with 8ns max pulse-width distortion — tight enough for 2Mbps SPI clocking or UART framing at 115200 baud, but not for high-speed parallel buses. Rise and fall times are 2ns typical, which keeps edge-rate induced ringing manageable on short PCB traces. The 20-SSOP footprint is a 5.30mm-wide body, 0.209-inch pitch — a common outline that fits most standard isolation layouts.","metaTitle":"ADUM1445ARSZ iCoupler Digital Isolator, 3750Vrms, 2Mbps","metaDescription":"ADI ADUM1445ARSZ iCoupler digital isolator: 4-channel unidirectional, 3750Vrms isolation, 2Mbps data rate, 25kV/µs CMTI, -40°C to 125°C, 20-SSOP.","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 maximum data rate of ADUM1445ARSZ?","answer":"The maximum data rate is 2Mbps. Propagation delay is 180ns max each direction with 8ns pulse-width distortion, which supports SPI clocking up to 2MHz and standard UART baud rates."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM1445ARSZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM1445ARSZ 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}}