Description
The FSUSB43 is a bi−directional, low−power, two−port,
high−speed, USB2.0 switch. Configured as a double−pole,
double−throw (DPDT) switch, it is optimized for switching between
two high−speed (480 Mbps) sources or a high−speed and full−speed
(12 Mbps) source.
The FSUSB43 is compatible with the requirements of USB2.0 and
features an extremely low on capacitance (CON) of 5.7 pF. The wide
bandwidth of this device (720 MHz) 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 FSUSB43 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
minimizes 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. Other applications include switching and
connector sharing in portable cell phones, PDAs, digital cameras,
printers, and notebook computers.
Features
• Over−Voltage Tolerance (OVT) on all USB Ports up to 5.25 V
without External Components
• Low On Capacitance: 5.7 pF Typical
• Low On Resistance: 3.9 Low On Resistance: 3.9 Typical Typical
• Low Power Consumption: 1 A Maximum
♦ 20 A Maximum ICCT over an Expanded Voltage Range
(VIN = 1.8 V, VCC = 4.3 V)
• Wide −3 db Bandwidth: >720 MHz
• Packaged in 10−Lead MicroPakTM (1.6 x 2.1 mm)
• 8 kV ESD Rating, >16 kV Power/GND ESD Rating
• Power−Off Protection on All Ports when VCC = 0 V
♦ D+/D− Pins Tolerate up to 5.25 V
Typical Applications
• Cell phone, PDA, Digital Camera, and Notebook
• LCD Monitor, TV, and Set−Top Box
