The Microchip USB2514 hub is a family of lowpower, configurable, MTT (multi transaction translator) hub controller IC products for embedded USB solutions. The 4 in the part number indicates the number of downstream ports available, while the B indicates battery charging support. The Microchip hub supports low-speed, full-speed, and hi-speed (if operating as a hispeed hub) downstream devices on all of the enabled downstream ports.
Cost savings include using the same PCB components and application of USB-IF Compliance by Similarity
Full power management with individual or ganged power control of each downstream port
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