1 Features
• Latch-up immune
• Dual supply range: ±4.5V to ±22V
• Single supply range: 4.5V to 44V
• –55°C to +125°C operating temperature
• Low on-resistance: 4Ω
• Low charge injection: 3pC
• High current support: 300mA (maximum)
• 1.8 V logic compatible inputs
• Integrated pull-down resistor on logic pins
• Fail-safe logic
• Rail-to-rail operation
• Bidirectional signal path
• Break-before-make switching

2 Applications
• Avionics flight control unit
• Aircraft cockpit display
• Standalone avionics precision flight control
• Interconnect and distribution box
• Aerospace and defense

3 Description
The TMUX7208M is a precision 8:1, single channel
multiplexer featuring low on resistance and charge
injection. The devices work with a single supply (4.5V
to 44V), dual supplies (±4.5V to ±22V), or asymmetric
supplies (such as VDD = 12 V, VSS = –5V). The
TMUX7208M support bidirectional analog and digital
signals on the source (Sx) and drain (D) pins ranging
from VSS to VDD.
The TMUX7208M is part of the precision switches
and multiplexers family of devices and have very
low on and off leakage currents allowing them to
be used in high precision measurement applications.
The TMUX72xx family provides latch-up immunity,
preventing undesirable high current events between
parasitic structures within the device typically caused
by overvoltage events. 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 the TMUX72xx family of switches
and multiplexers to be used in harsh environments.
Additionally, the TMUX7208M is rated for extended
temperature use down to –55°C, making it ideal for
harsh industrial and aerospace applications.