The TMUXHS221 is an analog high-speed mux/demux that can be used for routing differential as well as single ended CMOS signals through it. The device can be used for many high speed and low speed interfaces up to 3 Gbps including the following:

• Universal Serial Bus (USB) 2.0 HS, FS, and LS
• Embedded Universal Serial Bus (eUSB) 2.0 HS, FS, and LS
• I²C
• System Management Bus (SMBus™)
• Universal Asynchronous Receiver-Transmitter (UART™)
• Debug interface signals
• Mipi® Camera Serial Interface (CSI-2), Display Serial Interface (DSI)
• PCIe® clock
• DisplayPort™ Auxiliary and Hot Plug Detect Signals
• USB-C™ SBU signals
• Low Voltage Differential Signalling (LVDS)

An available GPIO pin of a controller or hard tie to voltage level H or L can easily control the mux or demux selection pin (SEL) of the device as an application requires.

Many interfaces require AC coupling capacitors between the transmitter and receiver. The 0201 or 0402 capacitors are the preferred option, but other capacitors can also be used depending on interface speed and signal integrity needs. If AC coupling capacitors are used on both sides of the TMUXHS221, then ensure the device is biased from either side, as there is no internal biasing to the device.