Microchip Technology KSZ8081MNXIA
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 32-VFQFN Exposed Pad |
| Mfr | Microchip Technology |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Type | Transceiver |
| Data Rate | 10Mbps, 100Mbps |
| Supplier Device Package | 32-QFN (5x5) |
| Voltage - Supply | 1.71V ~ 1.89V, 2.375V ~ 2.625V, 3.135V ~ 3.465V |
| Protocol | IEEE 802.3 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Full, Half |
| Package | Tray |
| Product Status | Active |
| REACH Status | REACH Unaffected |
| Other Names | 150-KSZ8081MNXIA |
| Standard Package | 490 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
KSZ8081MNXIA - 10/100BASE-TX Ethernet PHY Transceiver IC
The KSZ8081MNXIA from Microchip Technology is a low-power, single-port 10/100BASE-TX Ethernet Physical Layer / PHY transceiver designed for embedded networking applications. It supports RMII (Reduced Media Independent Interface) to minimize pin count while maintaining compatibility with IEEE 802.3 standards. The device operates from 1.71V to 1.89V (core), 2.375V to 2.625V (analog), and 3.135V to 3.465V (I/O), making it suitable for mixed-voltage systems. With a typical power consumption of 100mW, it is optimized for energy-efficient designs such as IoT devices, industrial automation, and consumer electronics. The 32-VFQFN (5x5mm) package ensures compact PCB integration, while its industrial temperature range (-40°C to +85°C) guarantees reliability in harsh environments.
Key Features
The KSZ8081MNXIA integrates Auto-MDIX (automatic crossover detection), eliminating the need for crossover cables, and supports Energy-Efficient Ethernet (EEE) for reduced power consumption during low traffic. It features an on-chip 1.2V LDO regulator, reducing external component count, and includes cable diagnostic functions for fault detection.
Applications & Use Cases
The KSZ8081MNXIA is widely used in industrial IoT (PLC communication, gateways), smart home devices (network cameras, hubs), and embedded systems (Raspberry Pi add-ons, automotive infotainment). Its low latency (<1μs) and high noise immunity make it ideal for real-time control applications, while its small footprint suits space-constrained designs. Additional use cases include medical monitoring equipment, building automation (HVAC controls), and renewable energy systems requiring reliable Ethernet connectivity.
Alternative Models
● KSZ8051MNL (Microchip) – Similar 10/100 PHY with MII interface, lower cost but higher power (120mW).
● DP83848 (Texas Instruments) – RMII/MII PHY with 150mW power, larger 7x7mm QFN package.
● LAN8720 (Microchip) – Compact RMII PHY (5x5mm QFN), 120mW power, lacks cable diagnostics.
● RTL8201 (Realtek) – Basic 10/100 PHY, lower cost but higher standby current (130mW).
● KSZ9031 (Microchip) – Gigabit Ethernet PHY for higher-speed requirements.
