The USB2503A-HZH is an integrated 3-port hub fully compliant with the USB 2.0 specification, supporting High-Speed (480Mbits/s), Full-Speed (12Mbits/s), and Low-Speed (1.5Mbits/s) devices. It incorporates three transaction translators to ensure maximum USB throughput, especially when operating with mixed-speed peripherals. Key features include an internal 1.8V linear voltage regulator, 1.8V low-power core operation, 3.3V I/O with 5V input tolerance, and an on-board 24MHz crystal driver. Configuration of VID/PID/DID and port settings can be done via a single serial I2C EEPROM or an SMBus slave port. Packaged in a 48-pin QFN, this hub is suitable for a wide range of USB expansion applications.