{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"KSZ8081RNDCA-TR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"KSZ8081RNDCA-TR","canonicalUrl":"https://icboms.com/microchip/KSZ8081RNDCA-TR","factsUrl":"https://icboms.com/api/mcp/products/KSZ8081RNDCA-TR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology KSZ8081RNDCA-TR, RMII 10/100 Ethernet physical-layer transceiver, full duplex, 1/1 driver/receiver, 24-VFQFN exposed pad, 0°C to 70°C, 1.8V/2.5V/3.3V supply.","salesMarkdown":"## RMII Ethernet PHY for 10/100Base-TX The KSZ8081RNDCA-TR is a single-port 10/100Base-TX Ethernet physical-layer transceiver from Microchip Technology, using the Reduced Media Independent Interface (RMII) to connect directly to an RMII-capable MAC. It operates in full duplex mode with one driver and one receiver (1/1), handling both transmit and receive paths simultaneously. The supply voltage accepts 1.8V, 2.5V, or 3.3V, allowing the PHY to match the I/O voltage of the host MAC without a separate level translator. The commercial temperature grade (0°C to 70°C) limits the part to indoor, office, or consumer equipment — not for extended industrial or automotive environments. ## Package and layout: 24-QFN with exposed pad Housed in a 24-VFQFN exposed-pad package (4x4 mm body, 24-QFN supplier device package), the KSZ8081RNDCA-TR requires a thermal pad on the PCB to dissipate heat from the PHY. The exposed pad must be soldered to a ground plane with adequate thermal vias — the datasheet layout section (page 7) gives the recommended footprint and stencil aperture. Surface-mount assembly with tape-and-reel (TR) or cut-tape (CT) packaging is standard. The 0.50 mm pitch QFN demands careful solder-paste volume control; a 4-layer board with a solid ground plane under the pad is typical for thermal and signal-integrity reasons. ## Active production and sourcing status The part is ROHS3 compliant, meeting EU Directive 2011/65/EU. Sourcing is handled per RFQ against your BOM quantity — no stock-holding claim, but the active status means supply continuity is not at risk.","metaTitle":"KSZ8081RNDCA-TR Transceiver RMII Full Duplex 24-QFN –","metaDescription":"Microchip KSZ8081RNDCA-TR RMII 10/100 Ethernet PHY, full duplex, 1.8V/2.5V/3.3V, 24-QFN exposed pad, active production, ROHS3. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"Type":"Transceiver","Duplex":"Full","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"RMII","Mounting Type":"Surface Mount","Package / Case":"24-VFQFN Exposed Pad","lifecycle_stage":"eol_hot","Voltage - Supply":"1.8V, 2.5V, 3.3V","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"24-QFN (4x4)","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.39","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.39000","currency":"USD"},{"qty":25,"price":"$1.26000","currency":"USD"},{"qty":1000,"price":"$1.26000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5b79cdd90c240544cdb8a081f3ba92de.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What supply voltages does KSZ8081RNDCA-TR accept?","answer":"The KSZ8081RNDCA-TR operates from a single supply rail that can be 1.8V, 2.5V, or 3.3V. This allows direct connection to a 1.8V or 3.3V MAC I/O without external level shifting. The nominal voltage is not the absolute maximum — stay within the datasheet's operating range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/KSZ8081RNDCA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/KSZ8081RNDCA-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T20:07:42.983Z","lastPublished":"2026-07-17T20:07:42.983Z","indexable":true}}