1 Features
• Compatible to USB 2.0 and eUSB2 LS, FS, and
HS physical layers
• Analog switch that can support most CMOS or
differential signals up to 3.3 V and 3 Gbps
• Data pins are 5 V tolerant
• Low RON of 3 Ω at VI/O = 0.2 V
• High –3 dB BW of 3.3 GHz
• Excellent for USB 2.0 or eUSB2 HS signals
at 240 MHz:
– Insertion loss = –0.4 dB
– Return loss = –22 dB
– Off isolation / cross talk = –32 dB
• Minimal vertical and horizontal USB 2.0
HS eye attenuation
• 3.3 V supply voltage
• 1.8 or 3.3 V control logic inputs
• Extended industrial temperature range
of –40 to 125°C
• Small 10-pin 1.4 mm × 1.8 mm, UQFN package

2 Applications
• PC and notebooks
• Gaming, TV, home theater, and entertainment
• Data center and enterprise computing
• Medical applications
• Test and measurements
• Factory automation and control
• Mobile Phones and tablets

3 Description
The TMUXHS221 is a high-speed bidirectional 2:1/1:2
multiplexer/demultiplexer optimized for USB 2.0 and
eUSB2 LS, FS, and HS signaling. The TMUXHS221
is an analog passive switch that works for many
high-speed interfaces for data rates up to 3 Gbps.
The TMUXHS221 supports either differential or single
ended CMOS signaling with a voltage range of −0.3 to
3.6 V.
The excellent high speed performance of the
TMUXHS221 results in minimal attenuation to the
USB 2.0 or eUSB2 HS signal eye diagrams with
very low channel ON resistance, high bandwidth,
low reflection, and low added jitter. The device
is optimized for excellent high frequency response
so that passing USB 2.0 HS electrical compliance
becomes easier. The datapaths of the device are also
matched for best intra-pair skew performance.
The TMUXHS221 has an extended temperature
range that suits many rugged applications including
industrial and high reliability use cases.