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Manufacturer Part #


FSUSB42 Series DPDT 4.3 V 480 Mbps SMT Hi Speed USB 2.0 Switch - MSOP-10

ECAD Model:
Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 2041
Product Specification Section
Technical Attributes
Attributes Table
Data Rate: 480Mbps
No of Channels: 2
Supply Voltage: 3V to 4.3V
Operating Temp Range: -40°C to +85°C
Package Style:  MSOP-10
Mounting Method: Surface Mount
Features & Applications
The FSUSB42MUX 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 (480 Mbps) sources or a Hi-Speed and Full-Speed (12 Mbps) source. The FSUSB42 is compatible with the requirements of USB2.0 and features an extremely low on capacitance (CON) of 5.5 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 FSUSB42 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 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: 3.7 pF Typical
  • Low On Resistance: 3.9 Ω Typical
  • Low Power Consumption: 1 µA Maximum
  • 15 µA Maximum ICCT over and Expanded Control Voltage Range (VIN= 1.8 V, VCC= 4.3 V)
  • Wide -3 dB Bandwitch: 720 MHz
  • Packaged in:
  • 10-Lead UMLP (1.4 x 1.8 mm)
  • 10-Lead MSOP
  • 8 kV ESD Rating, 16 kV Power/GND ESD Rating
  • Over-Voltage Tolerance (OVT) on all USB Ports Up to 5.25 V without External Components


  • Media Tablets
  • Mobile Handsets
  • PMP/MP3 Players
  • Storage & Peripherals
  • Wireless LAN Card & Broadband Access



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Product Variant Information section