FSUSB42MUX USB2.0 Switch IC – Hi-Speed Bi-Directional UART Switch MSOP-10

The FSUSB42MUX USB2.0 Switch IC is a bi-directional, low-power, two-port USB2.0 switch designed for high-speed (480 Mbps) and full-speed (12 Mbps) applications. Configured as a double-pole, double-throw (DPDT) switch, it provides fast and reliable switching between multiple USB sources.

With ultra-low on-capacitance (3.7 pF) and a wide bandwidth of 720 MHz, the FSUSB42MUX ensures minimal signal distortion, low crosstalk, and superior performance for high-speed USB data lines. The device also supports over-voltage tolerance on USB ports and low-power consumption, making it ideal for ultra-portable applications such as cell phones, PDAs, digital cameras, printers, and notebook computers.

Features:

• Bi-directional, low-power USB2.0 switch
• Two ports with DPDT configuration for flexible USB switching
• High-speed (480 Mbps) and full-speed (12 Mbps) compatible
• Low on-capacitance: 3.7 pF typical
• Low on-resistance: 3.9 Ω typical
• Wide bandwidth: >720 MHz for minimal edge and phase distortion
• Low power consumption: 1 µA typical, 15 µA maximum over expanded voltage range
• Over-voltage tolerance (OVT): Up to 5.25V on USB ports without external components
• ESD protection: 8 kV HBM, >16 kV power/GND
• Package: 10-lead MSOP and UMLP (1.4 × 1.8 mm)

Applications:

• Mobile phones, PDAs, digital cameras, notebooks
• LCD monitors, TVs, set-top boxes
• USB switching, connector sharing, and port multiplexing in portable devices
• Ultra-portable electronics requiring low-power bi-directional USB switching