MCHPKSZ8851SNL-TR

Overview

The KSZ8851SNL-TR is a single-chip Fast Ethernet controller with a standard SPI interface and an integrated 10/100 PHY. It features a 12KB internal RAM buffer for RX/TX packets and supports advanced power management tools such as Energy Detect and Power Saving modes. This device is designed to add Ethernet connectivity to embedded systems that utilize microcontrollers without built-in MAC/PHY peripherals.

Why Choose This Part

The integrated 12KB RAM buffer reduces CPU overhead by handling packet buffering internally. Its small 5x5mm QFN package and 3.3V single-supply operation minimize PCB footprint and power design complexity, while the 2uA sleep current is ideal for energy-sensitive applications.

Applications

Getting Started

Engineers can evaluate this controller using the KSZ8851SNL Evaluation Board from Microchip. Software development is supported by Microchip's TCP/IP stack and various third-party drivers for common RTOS environments. Ensure the SPI clock frequency is matched to the system requirements for maximum 100Mbps throughput.

KSZ8851 Family

Comparing specs that differ across variants. The current part is highlighted.

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