1 Features
• High supply voltage capable:
– Dual supply: ±10 V to ±50 V
– Single supply: 10 V to 100 V
– Asymmetric dual supply operation
• Consistent parametrics across supply voltages
• Latch-up immune
• Low crosstalk: –110 dB
• Low input leakage: 40 pA
• Low on resistance flatness: 0.5 Ω
• Removes need for additional logic rail (VL)
• 1.8 V Logic capable
• Fail-safe logic: up to 48 V independent of supply
• Integrated pull-down resistor on logic pins
• Bidirectional signal path
• Break-before-make switching
• Wide operating temperature TA: –40°C to 125°C
• Industry-standard TSSOP and
smaller WQFN packages

2 Applications
• High voltage bidirectional switching
• Analog and digital multiplexing and demultiplexing
• Semiconductor test equipment
• LCD test equipment
• Battery test equipment
• Data acquisition systems (DAQ)
• Digital multi-meter (DMM)
• Factory automation and control
• Programmable logic controllers (PLC)
• Analog input modules

3 Description
The TMUX8108 and TMUX8109 are modern high
voltage capable analog multiplexers in 8:1 (single
ended) and 4:1 (differential) configurations. The
devices work well with dual supplies, a single supply,
or asymmetric supplies up to a maximum supply
voltage of 100 V. The TMUX810x devices provide
consistent analog parametric performance across the
entire supply voltage range. The TMUX8108 and
TMUX8109 support bidirectional analog and digital
signals on the source (Sx) and drain (Dx) pins.
All logic inputs support logic levels of 1.8 V, 3.3 V, 5V
and can be connected as high as 48 V, allowing for
system flexibility with control signal voltage. Fail-safe
logic circuitry allows voltages on the logic pins to be
applied before the supply pin, protecting the device
from potential damage.
The device family provides latch-up immunity,
preventing undesirable high current events between
parasitic structures within the device. A latch-up
condition typically continues until the power supply
rails are turned off and can lead to device failure.
The latch-up immunity feature allows this family of
multiplexers to be used in harsh environments.