FSUSB45: Hi-Speed USB2.0 (480Mbps) Switch w/Dedicated Charger Port Detect

The FSUSB45 is a bi-directional, low-power, two-port, Hi-Speed, USB2.0 switch. Configured as a double-pole, double-throw (DPDT) switch, it is optimized for switching between two Hi-Speed (480Mbps) sources or a Hi-Speed source and a Full-Speed (12Mbps) source. The FSUSB45 is compatible with the requirements of USB2.0 and features an extremely low on capacitance (CON) of 7.0pF. 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 FSUSB45 contains special circuitry on the switch I/O pins for applications where the VCC supply is powered-off (VCC=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 (VCC). This feature is especially valuable to mobile applications, such as cell phones, allowing for direct interface with the general-purpose I/Os of the baseband processor. An additional feature is the detection of the 1,1 state on D+/D- to signal an interrupt (INT) to the processor when entering a dedicated charging port mode of operation.

Features

• Low On Capacitance, 7.0pF Typical
• Low On Resistance, 3.9Ω Typical
• Low Power Consumption: 1µA Maximum
• —15µA Maximum I_CCT over and Expanded Voltage Range (V_IN= 1.8V, V_CC= 4.3V)
• Wide -3dB bandwidth: > 720MHz
• Packaged in:
• 10-Lead MicroPak™ (1.6 x 2.1mm)
• 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- Pin Tolerate up to 5.25V