1 Features

• Latch-up immune

• Dual supply range: ±4.5V to ±22 V

• Single supply range: 4.5V to 44 V

• –55°C to +125°C operating temperature

• Low on-resistance: 2Ω

• High current support: 220mA (maximum)

• 1.8V logic compatible

• Integrated pull-down resistor on logic pins

• Fail-safe logic

• Rail-to-rail operation

• Bidirectional operation

2 Applications

• Avionics flight control unit

• Aircraft cockpit display

• Standalone avionics precision flight control

• Interconnect distribution box

• Aerospace and defense

3 Description

The TMUX7212M is a complementary metaloxide

semiconductor (CMOS) switch with four

independently selectable 1:1, single-pole, single-throw

(SPST) switch channels. The devices work with a

single supply (4.5V to 44 V), dual supplies (±4.5V to

±22 V), or asymmetric supplies (such as VDD = 12 V,

VSS = –5V). The TMUX7212M supports bidirectional

analog and digital signals on the source (Sx) and

drain (Dx) pins ranging from VSS to VDD.

Each switch of the TMUX7212M is controlled with

appropriate logic control inputs on the SELx pins. The

TMUX7212M 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 TMUX7212M 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 TMUX7212M family of switches

and multiplexers to be used in harsh environments.

Additionally, the TMUX7212M is rated for extended

temperature use down to –55°C, making it an

excellent choice for harsh industrial and aerospace

applications.