The FSUSB31 is a low-power, single-port, high-speed USB 2.0 switch. This part is configured as a double-pole, single-throw switch and is optimized for switching or isolating a high-speed (480Mbps) source or a high-speed and full-speed (12Mbps) source. The FSUSB31 is compatible with the requirements of USB2.0 and features an extremely low on capacitance (C_ON) of 3.7pF. The wide bandwidth of this device (>720MHz) exceeds the bandwidth needed to pass the third harmonic, resulting in signals with minimum edge and phase distortion. Superior channel-to-channel crosstalk minimizes interference.

The FSUSB31 contains special circuitry on the D+ / D- pins that allows the device to withstand an over-voltage condition. This device is also designed to minimize current consumption even when the control voltage applied to the /OE pin is lower than the supply voltage (V_CC). This feature is especially valuable for mobile applications, such as cell phones, allowing direct interface with the general-purpose I/Os of the baseband processor. Other applications include port isolation and switching in portable cell phones, PDAs, digital cameras, printers, and notebook computers.

• Low On Capacitance: 3.7pF (Typical)
• Low On Resistance: 6.5W (Typical)
• Low Power Consumption: 1µA (Maximum)
  • _{–10µA Maximum ICCT Over an Expanded Control Voltage Range: (VIN= 2.6V, VCC= 4.3V)}
• Wide -3dB Bandwidth: >720MHz
• 8kV I/O to GND ESD Protection
• Power-off Protection When V_CC= 0V, D+/D– Pins Can Tolerate up to 4.3V
• Packaged in:
  • _{– 8-lead MicroPak™ (1.6mm x 1.6mm)}
  • _{– 8-lead US8}
  • _{– 8-lead Ultrathin MLP (1.2 x 1.4mm)}

• Cell Phone, PDA, Digital Camera, and Notebook
• LCD Monitor, TV, and Set-top Box