1 Features
• Latch-up immune
• Dual supply range: ±4.5V to ±22V
• Single supply range: 4.5V to 44V
• Low on-resistance: 2Ω
• High current support: 220mA (maximum) (TSSOP)
• –40°C to +125°C operating temperature
• Integrated pull-down resistor on logic pins
• 1.8V logic compatible
• Fail-safe logic
• Rail-to-rail operation
• Bidirectional operation

2 Applications
• EV charging station power module
• Advanced driver assistance systems (ADAS)
• Automotive gateway
• Analog and digital multiplexing or demultiplexing
• Automotive head unit
• Telematics control unit
• Emergency call (eCall)
• Infotainment
• Body control modules (BCM)
• Body electronics and lighting
• Battery management systems (BMS)
• HVAC controller module
• ADAS domain controller

3 Description
The TMUX7212 is a complementary metaloxide
semiconductor (CMOS) switch with four
independently selectable 1:1, single-pole, single-throw
(SPST) switch channels. This device works with a
single supply (4.5V to 44V), dual supplies (±4.5V to
±22V), or asymmetric supplies (such as VDD = 12V,
VSS = –5V). The TMUX721x supports bidirectional
analog and digital signals on the source (Sx) and
drain (Dx) pins ranging from VSS to VDD.
The switches of the TMUX721x are controlled with
appropriate logic control inputs on the SELx pins.
The TMUX721x is part of the precision switches and
multiplexers family of devices and has very low on
and off leakage currents allowing them to be used in
high precision measurement applications.
The TMUX721x 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 TMUX721x to be used in harsh
environments.