Microchip 2-Port USB 2.0 Hi-Speed Hub Controller

USB2422 hub is a low-power, single transaction translator, hub controller IC with two downstream ports for embedded USB solutions. The hub controller can attach to an upstream port as a Hi-Speed and Full-Speed hub or as a Full-Speed only hub. The hub supports Low-Speed, Full-Speed, and Hi-Speed (when configured as a Hi-Speed hub) downstream devices on the enabled downstream ports. All required resistors on the USB ports are integrated into the hub. This includes all series termination resistors on D+ and D- pins and all required pull-down and pull-up resistors on D+ and D- pins. The over-current sense inputs for the downstream facing ports have internal pull-up resistors.

Features

• Supports the USB Battery Charging Specification, Revision 1.1
• Fully integrated USB termination and pull-up/pulldown resistors
• Supports a single external 3.3 V supply source; internal regulators provide 1.2 V internal core voltage
• On-chip driver for 24 MHz crystal resonator or external 24 MHz clock input
• ESD protection up to 6 kV on all USB pins
• Supports self-powered operation
• The hub contains a built-in default configuration; no external configuration options or components are required
• Downstream ports as non-removable ports
• Downstream port power control and over-current detection on an individual or ganged basis
• Supports compound devices on a port-by-port basis
• 24-pin SQFN (4x4 mm), RoHS-compliant package
• Commercial temperature range support: 0ºC to +70ºC
• Industrial temperature range support: -40ºC to +85ºC