MCHPKSZ8081RNA
Overview
The KSZ8081RNA is a single-supply 10Base-T/100Base-TX Ethernet physical layer transceiver designed for RMII-based designs. It features LinkMD cable diagnostics and a compact 4x4 mm QFN package, making it suitable for space-constrained networking applications.
Why Choose This Part
This transceiver simplifies board design by including on-chip termination resistors for differential pairs and a built-in 1.2V regulator for the core. It offers high ESD protection (6 kV HBM) and features the LinkMD TDR-based cable diagnostic tool to identify faulty copper cabling.
Applications
Key Specifications
Getting Started
Engineers can evaluate this PHY using the KSZ8081RNA-EVAL board, which breaks out the RMII interface for connection to external MCUs. Software integration is supported by standard Micrel/Microchip Ethernet PHY drivers found in most RTOS environments and the Linux kernel.
KSZ8081 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Protocol | Package | Temp Range | Stock |
|---|---|---|---|---|
| KSZ8081RNA (this part) | RMII | VFQFN-24 | 0degC ~ 70degC | 31,142 |
| KSZ8081RNAI (Microchip (formerly Micrel)) | RMII | VFQFN-24 | -40degC ~ 85degC | 43,432 |
| KSZ8081MNXCA-TR Tape & Reel | MII | VFQFN-32 | 0degC ~ 70degC | 4,678 |
| KSZ8081RNBCA-TR (Microchip (formerly Micrel)) Tape & Reel | RMII | VFQFN-32 | 0degC ~ 70degC | 19,338 |
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