1 Features
• Passive bidirectional USB-C Alternate Mode Mux
to switch between USB and DisplayPort signals
• Supports USB 3.2 up to 10Gbps (Gen 2.0) and
DisplayPort 2.1 up to 10Gbps per lane (UHBR10)
• Compatible for Source/Host and Sink/Device
applications
• −3dB differential BW: 9.5GHz
• Dynamic characteristics:
– Insertion loss = −1.6dB at 5GHz
– Return loss = −18dB at 5GHz
• Supports common mode voltage (CMV) from 0V to
1.8V
• Adaptive CMV tracking
• 6V tolerant SBU pins to survive short-to-VBUS
events
• Can be configured through GPIO pins or I2C
• Supports both 1.8V and 3.3V I2C
• Single supply voltage VCC: 3.3V
• Active power consumption: 340μA
• Low standby power consumption: 0.5μA (pin
mode)
• Extended industrial temperature: −40°C to 105°C
• Available in 3mm × 6mm QFN package

2 Applications
• PCs and notebooks
• TVs
• Gaming
• Docking Stations
• Home theater and entertainment
• Factory automation and control
• Electronic point of sale (EPOS)
• Smartphones
• Tablets

3 Description
The TMUXHS4446 is a high-speed bidirectional
passive crosspoint switch or cossbar (Xbar). This
device is used to switch between USB 3.2 Gen2
SuperSpeed and DisplayPort 1.4/2.1 (up to 10Gbps
UHBR10) signals over a USB Type-C also known as
USB-C interface. The device also provides switching
for the low-speed SBU signals that are used for
DisplayPort auxiliary channels. The TMUXHS4446
supports differential signaling with a common mode
voltage (CMV) range of 0V to 1.8V and a differential
amplitude from 0V to 1800mVpp. Adaptive CMV
tracking enables the channel through the device
to remain unchanged for the entire common-mode
voltage range.
The dynamic characteristics of the TMUXHS4446
allows high-speed switching with minimum attenuation
to the signal eye diagrams, and very little added
jitter. The silicon design of the device is optimized for
excellent frequency response at a higher frequency
spectrum of the signals. The silicon signal traces and
switch network of the TMUXHS4446 are matched for
best intra-pair skew performance.
The TMUXHS4446 has an extended industrial
temperature range (−40°C to 105°C) designed for
many rugged applications, including industrial and
high reliability use cases.