The FSUSB42 is a bi-directional, low-power, two-port, Hi-Speed, USB2.0 switch. Configured as a double-pole, double-throw switch (DPDT) switch, it is optimized for switching between two Hi-Speed (480Mbps) sources or a Hi-Speed and Full-Speed (12Mbps) source.

The FSUSB42 is compatible with the requirements of USB2.0 and features an extremely low on capacitance (C_ON) of 5.5pF. 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 also minimizes interference.

The FSUSB42 contains special circuitry on the switch I/O pins for applications where the V_CC supply is powered-off (V_CC=0), which allows the device to withstand an over-voltage condition. This device is designed to minimize current consumption even when the control voltage applied to the SEL pin is lower than the supply voltage (V_CC). This feature is especially valuable to ultra-portable applications, such as cell phones, allowing for direct interface with the generalpurpose I/Os of the baseband processor. Other applications include switching and connector sharing in portable cell phones, PDAs, digital cameras, printers, and notebook computers.

• Low On Capacitance, 3.7pF Typical
• Low On Resistance, 3.9W Typical
• Low power consumption: 1µA Maximum
  • –15µA maximum I_CCT over and Expanded Control Voltage Range (V_IN= 1.8V, V_CC= 4.3V)
• Wide -3dB bandwitch, > 720MHz
• Packaged in 10-lead UMLP (1.4 x 1.8mm)
• 8kV ESD Rating, >16kV Power/GND ESD Rating
• Power-Off Protection on All Ports when V_CC= 0V
  • D+/D- Pins Tolerate up to 5.25V

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