Gigabit Ethernet PHY in a 128-PQFP
The KSZ9021GQI is a full-duplex Gigabit Ethernet transceiver from Microchip Technology, built for 1000BASE-T copper links. It integrates eight drivers and eight receivers (8/8) in a single 128-PQFP package (14x20 mm), making it a direct-fit PHY for managed switches, industrial Ethernet nodes, and embedded networking modules that need a single-chip physical-layer interface.
Operates from a 3.135V to 3.465V supply — a standard 3.3V rail with ±5% tolerance.
Microchip lists the KSZ9021GQI as Active. The part is ROHS3 compliant.