{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADUM3154ARSZ","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADUM3154ARSZ","canonicalUrl":"https://icboms.com/analog-devices/ADUM3154ARSZ","factsUrl":"https://icboms.com/api/mcp/products/ADUM3154ARSZ","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADUM3154ARSZ, iCoupler®, SPIsolator™ series, SPI digital isolator, 4 channels, 3/1 input/output, 2Mbps data rate, 3750Vrms isolation, 25kV/µs CMTI, 3V to 5.5V supply, -40°C to 125°C, 20-SSOP package.","salesMarkdown":"It is designed for SPI bus isolation in systems where the controller and peripheral are on separate ground domains — motor drives, industrial PLCs, medical patient-monitoring interfaces, and isolated sensor front-ends. The part provides three channels from side 1 to side 2 and one channel in the reverse direction, matching the typical SPI signal set (SCLK, MOSI, CS, MISO). The 3750Vrms isolation voltage sets the safety barrier rating — sufficient for reinforced insulation in medical equipment per IEC 60601 and for basic insulation in 240VAC industrial systems. The 2Mbps data rate is the maximum SPI clock speed the isolator can sustain; for a 10 MHz SPI bus this part is too slow, but for typical configuration and sensor readout buses running at 1-2 MHz it fits cleanly. The 25kV/µs common-mode transient immunity is the key spec for motor-drive and inverter applications — it determines how well the isolator rejects switching noise from the power stage without corrupting the SPI frame. The 3V to 5.5V supply range allows operation on either 3.3V or 5V rails without a separate level shifter, simplifying the power tree. Propagation delay is 25ns max in both directions, with pulse-width distortion held to 2ns. These timing figures matter for SPI bus timing closure — the round-trip delay through the isolator plus the cable must still meet the peripheral's setup/hold window. Rise and fall times are 2.5ns typical, which keeps edge rates controlled enough to avoid excessive ringing on short PCB traces. ## Package and rework considerations The 20-SSOP package with 0.209 inch body width and 5.30mm height is a standard fine-pitch SOIC footprint. The part is surface-mount only, ships in tube, and is MSL 3 per the iCoupler family norm. If the moisture-barrier bag has been open past the floor-life window, bake at 125°C for 24 hours before reflow. The 20-SSOP lead pitch is 0.65mm — a standard fine-tip iron or hot-air station can hand-rework it without lifting pads, provided the board has adequate thermal relief on the ground pins. ## Lifecycle and supply posture For dual-sourcing resilience, the ADUM3154ARSZ is the standard SPIsolator variant — there is no direct pin-compatible second source from another manufacturer, but the iCoupler family includes other channel-count and data-rate options in the same 20-SSOP footprint if the design needs to trade off speed or directionality.","metaTitle":"ADUM3154ARSZ SPI Digital Isolator, 3750Vrms, 2Mbps, 20-SSOP","metaDescription":"ADI ADUM3154ARSZ iCoupler SPI digital isolator: 3750Vrms isolation, 2Mbps data rate, 4 unidirectional channels, -40°C to 125°C, 20-SSOP. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"iCoupler®, SPIsolator™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Digital Isolators"],"specifications":{"Type":"SPI","Series":"iCoupler®, SPIsolator™","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":"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)":"2ns","Propagation Delay tpLH / tpHL (Max)":"25ns, 25ns","Common Mode Transient Immunity (Min)":"25kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.47000","currency":"USD"},{"qty":10,"price":"$5.84100","currency":"USD"},{"qty":66,"price":"$5.56970","currency":"USD"},{"qty":132,"price":"$4.83606","currency":"USD"},{"qty":264,"price":"$4.61871","currency":"USD"},{"qty":528,"price":"$4.21119","currency":"USD"},{"qty":1056,"price":"$3.66781","currency":"USD"},{"qty":2508,"price":"$3.53197","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/ADuM3154.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to ADUM3154ARSZ?","answer":"Within the ADI SPIsolator family, the ADUM3154ARSZ is the 4-channel, 3/1 direction, 2Mbps variant in 20-SSOP. The ADUM3153ARSZ offers a 3/1 channel split at a higher data rate; the ADUM3151ARSZ provides a 2/2 split. All share the same 20-SSOP footprint and pin 1 orientation, but verify the channel direction map matches your SPI signal assignment before substituting."},{"question":"What is the data rate of ADUM3154ARSZ?","answer":"The ADUM3154ARSZ supports a maximum data rate of 2Mbps, which limits the SPI clock to 2 MHz. For higher-speed SPI buses above 2 MHz, consider the ADUM3153ARSZ or other SPIsolator variants with higher data rate ratings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADUM3154ARSZ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADUM3154ARSZ 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}}