1 IN – 4 OUT USB 2.0 High Speed hub chip

Description

The FE1.1s chip is a high-performance, low-power integrated circuit that allows you to build a USB 2.0 hub with 4 output ports and associated status LEDs. It requires a minimum number of external components, essentially a quartz crystal for the clock that sets the speed of the downstream ports (outputs to devices). It is fully compliant with the Universal Serial Bus Revision 2.0 (USB 2.0) specification and supports, on the Host side (Upstream Facing Port), the maximum USB 2.0 speed (480 MHz) and Full-Speed mode, while on the device side (4 downstream ports) it is compatible with High-Speed, Full-Speed, and Low-Speed (12 MHz). It is also compatible with the Universal Charging Solution profile and the USB Battery Charging Specification 1.1. The component integrates four USB 2.0 transceivers and pull-up resistors on the data lines (1.5 kΩ on the upstream and likewise downstream).

Technical specifications

• Package: SSOP-28_150mil
• Fully USB 2.0 compliant
• Supports High Speed (480 MHz), Full-Speed (12 MHz), and Low-Speed (1.5 MHz) modes
• Integrated USB 2.0 transceivers
• Integrated 5 V to 3.3 V and 1.8 V regulator
• Integrated Power-On-Reset circuit
• Integrated 12 MHz oscillator with feedback resistor
• Phase Lock Loop (PLL) from 12 MHz to 480 MHz
• Single Transaction Translator (STT)
• 4 USB ports
• Status LEDs for the 4 output ports