{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PS9821-2-F3-AX","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"PS9821-2-F3-AX","canonicalUrl":"https://icboms.com/renesas/PS9821-2-F3-AX","factsUrl":"https://icboms.com/api/mcp/products/PS9821-2-F3-AX","rawCanonicalId":null},"summary":{"shortDescription":"Renesas NEPOC PS9821-2-F3-AX dual-channel optocoupler, 15Mbps data rate, open collector outputs, 2500Vrms isolation, 15kV/µs CMTI, 2.7V-3.6V supply, 8-SOIC/SSOP, -40°C to 85°C.","salesMarkdown":"## Dual-channel digital isolator with 15Mbps open-collector outputs The Renesas NEPOC PS9821-2-F3-AX is a dual-channel optocoupler in an 8-SOIC package, designed for galvanic isolation in digital interface applications. It provides two independent isolation channels with open-collector outputs, supporting a data rate of 15Mbps and an isolation voltage rating of 2500Vrms. The part operates from a 2.7V to 3.6V supply on the output side and accepts DC input on the LED side with a typical forward voltage of 1.65V. ## 15kV/µs common-mode transient immunity — what it means for motor-drive and inverter designs The PS9821-2-F3-AX specifies a minimum common-mode transient immunity (CMTI) of 15kV/µs. In a motor drive or inverter stage, fast-switching IGBTs or SiC MOSFETs can couple kilovolt-per-microsecond edges across the isolation barrier. A CMTI rating below the system's dV/dt risks data corruption or latch-up on the output side. At 15kV/µs minimum, this part handles the transient environment of most industrial drives and power converters without needing external filtering or a higher-rated isolator. ## Open-collector output — pull-up resistor selection and bus interface The open-collector output stage on each of the two channels sinks up to 25 mA per channel. This output type requires an external pull-up resistor to the supply rail (2.7V to 3.6V) to define the logic-high level. Propagation delay is specified at 75ns max for both low-to-high and high-to-low transitions, with rise and fall times of 20ns and 5ns typical. For a 15Mbps NRZ data stream, the pull-up value should be chosen to keep the RC time constant well under one bit period — roughly 33 ns at 15 Mbps — which typically lands in the 330Ω to 1kΩ range depending on bus capacitance and supply voltage.","metaTitle":"PS9821-2-F3-AX Optocoupler, 2-Ch Open Collector, 15Mbps","metaDescription":"Renesas NEPOC PS9821-2-F3-AX dual-channel optocoupler with open collector outputs, 15Mbps data rate, 2500Vrms isolation, 15kV/µs CMTI. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"NEPOC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Series":"NEPOC","Package":"Tape & Reel (TR); Cut Tape (CT)","Data Rate":"15Mbps","Input Type":"DC","Output Type":"Open Collector","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.7V ~ 3.6V","Number of Channels":"2","Voltage - Isolation":"2500Vrms","Operating Temperature":"-40°C ~ 85°C","Inputs - Side 1/Side 2":"2/0","Rise / Fall Time (Typ)":"20ns, 5ns","Supplier Device Package":"8-SSOP","Current - Output / Channel":"25 mA","Voltage - Forward (Vf) (Typ)":"1.65V","Current - DC Forward (If) (Max)":"15mA","Propagation Delay tpLH / tpHL (Max)":"75ns, 75ns","Common Mode Transient Immunity (Min)":"15kV/µs"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.8","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.80000","currency":"USD"},{"qty":10,"price":"$3.39400","currency":"USD"},{"qty":100,"price":"$2.77950","currency":"USD"},{"qty":500,"price":"$2.34320","currency":"USD"},{"qty":1500,"price":"$2.14928","currency":"USD"},{"qty":3000,"price":"$2.06040","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5982c3b5051764b9472116a10298f6b2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How many channels does the PS9821-2-F3-AX have?","answer":"The PS9821-2-F3-AX has two isolation channels, both configured as input-side 1 to output-side 2 (2/0 direction). Both channels share a common output supply rail."},{"question":"Is the PS9821-2-F3-AX RoHS compliant?","answer":"Yes, the PS9821-2-F3-AX is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/PS9821-2-F3-AX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/PS9821-2-F3-AX 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}}