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.