Microchip's USB251xB is a family of versatile, cost-effective, and power-efficient USB 2.0 hub controllers. Leveraging Microchip's innovative MultiTRAK™ technology that delivers industry-leading data throughput in mixed-speed USB environments, the USB251xB family is a USB port expansion solution for applications that demand ultra low power and a small footprint without compromising on performance. Well-suited for consumer and mobile applications, all members of the USB251xB family are available in a space-saving package.

High performance, ultra low-power, small footprint hub controller IC
Enhanced OEM configuration options available through either a single serial I2C® EEPROM, or SMBus slave port
MultiTRAK - High-performance multiple transaction translator which provides one transaction translator per port
PortMap - Flexible port mapping and disable sequencing
PortSwap - Programmable USB differential-pair pin locations ease PCB design by aligning USB signal lines directly to connectors