KSZ8893MQLI is a 3-port 10/100 industrial Ethernet switch IC from Microchip (former Micrel), integrating 2 integrated PHYs + 1 MAC host port with MII/RMII host interface in LQFP48 package, industrial temp -40℃~+85℃. Equipped with store-and-forward switching, QoS traffic priority and port isolation, optimized for industrial switches and dual-Ethernet embedded devices.

1. Port Configuration: 2×10/100M integrated PHY ports + 1×MII/RMII host MAC port 2. Standard Compliance: IEEE802.3 10BASE-T / 100BASE-TX 3. Switch Buffer: 2MB on-chip packet memory 4. QoS: 4-level hardware traffic priority queue 5. Temp Grade: Industrial -40℃ ~ +85℃ 6. Package: LQFP-48 7. Special Functions: Port VLAN isolation, broadcast storm suppression, link status detection

1. All-in-one dual PHY + switch core eliminates external PHY chips, simplifying dual-Ethernet PCB layout 2. Hardware 4-tier QoS prioritizes industrial real-time control packets to cut forwarding latency 3. Native VLAN port isolation blocks cross-device broadcast storm interference 4. RMII simplified interface reduces IO pin consumption of MCU/FPGA 5. Wide industrial temperature with surge ESD immunity for cabinet & outdoor industrial gateways

1. Dual-Ethernet industrial PLCs, motion controllers, machine vision gateways 2. Mini 3-port industrial switches, dual-Ethernet expansion for serial device servers 3. Ethernet data acquisition modules for PV inverters & energy storage BMS 4. Low-voltage communication boards for rail transit onboard equipment