The KSZ8873FLLI is an Ethernet switch IC manufactured by Microchip Technology. Here is a detailed introduction to this specific integrated circuit:


  • Manufacturer: Microchip Technology (formerly Microsemi)
  • Part Number: KSZ8873FLLI
  • Package: 64-LQFP (Quad Flat Package with 64 leads) - This package type is commonly used for medium to high pin-count integrated circuits and offers good thermal performance and ease of PCB mounting.
  • DataSheet


Key Features:

  1. Ethernet Switch: The KSZ8873FLLI is designed as a 3-port Ethernet switch, capable of managing Ethernet connections within a network.

  2. Integrated Solution: This IC integrates the necessary functionality for Ethernet switching, providing a compact and cost-effective solution.

  3. Three-Port Operation: The 3-port configuration means it can connect three different Ethernet devices or network segments together.

  4. Quality of Service (QoS): It likely supports QoS features to prioritize certain types of network traffic for improved performance.

  5. Energy Efficiency: The IC might incorporate features for energy efficiency, such as low-power modes or mechanisms for reducing power consumption.


  • Embedded Systems: Suitable for use in embedded systems where multiple Ethernet devices need to be connected.
  • Industrial Networking: Ideal for industrial networking applications where a reliable and compact Ethernet switching solution is required.
  • Home Automation: Used in smart home applications where networking multiple devices is necessary.
  • Small Office/Home Office (SOHO): Suitable for small office or home office networking setups requiring a simple Ethernet switch.
  • IoT (Internet of Things): Employed in IoT devices and networks for Ethernet connectivity and communication.

Pin Configuration:

  • The 64-LQFP package will have various pins dedicated to power, ground, Ethernet ports, control signals, and other functions specific to Ethernet switch operations.

Please refer to the datasheet provided by Microchip Technology for the KSZ8873FLLI for detailed information on electrical characteristics, configuration options, register settings, timing diagrams, and application notes. This information will guide you in effectively utilizing the Ethernet switch IC in your network design or application.