FSUSB31: Low Power Dual SPST Hi-Speed USB 2.0 (480 Mbps) Switch

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 (CON) 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 (VCC). 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.

Features

• Low On Capacitance: 3.7pF (Typical)
• Low On Resistance: 6.5Ω (Typical)
• Low Power Consumption: 1µA (Maximum)
• —10µA Maximum I_CCT Over an Expanded Control Voltage Range: (V_IN= 2.6V, V_CC= 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 5.5V
• Packaged in:
• — 8-lead MicroPak™ (1.6mm x 1.6mm)
• — 8-lead US8
• — 8-lead Ultrathin MLP (1.2 x 1.4mm)

Application Notes