The Microchip USB2517-JZX is a USB 2.0 7-port hub controller in a 64-QFN package. It handles the upstream port and seven downstream ports, managing enumeration, speed negotiation, and power switching for each port.
USB 2.0 only — not a USB 3.0 part
This controller is USB 2.0 (480 Mbps) only. It does not support USB 3.0 SuperSpeed signaling. If your design requires USB 3.0 downstream ports, you need a different hub controller such as the Microchip USB5744 or a USB 3.x hub. The USB2517-JZX is the right choice when all downstream devices are USB 2.0 or 1.1, keeping BOM cost and power lower than a USB 3.0 hub.
ROHS3 compliance is confirmed.
Package and thermal: 64-QFN with exposed pad
The 64-VFQFN package measures 9x9 mm with an exposed pad underneath. Layout should follow the manufacturer's recommended footprint for the 64-QFN (9x9) to ensure proper solder joint reliability.
