TMUX7234PWR

The TMUX7234 is a complementary metal-oxide semiconductor (CMOS) multiplexer with latchup immunity. The TMUX7234 contains four independently controlled SPDT switches with an EN pin to enable or disable all four channels. The device supports single supply (4.5 V to 44 V), dual supplies (±4.5 V to ±22 V), or asymmetric supplies (such as VDD = 12 V, VSS = -5 V). The TMUX7234 supports bidirectional analog and digital signals on the source (Sx) and drain (D) pins ranging from VSS to VDD. All logic control inputs support logic levels from 1.8 V to VDD, ensuring both TTL and CMOS logic compatibility when operating in the valid supply voltage range. Fail-Safe Logic circuitry allows voltages on the control pins to be applied before the supply pin, protecting the device from potential damage. 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.

Applications

• Factory automation and control
• Flow transmitters
• Programmable logic controllers (PLC)
• Analog input modules
• Data acquisition systems (DAQ)
• Semiconductor test equipment
• Battery test equipment
• Ultrasound scanners
• Patient monitoring and diagnostics
• Optical networking
• Optical test equipment
• Wired networking
• Remote radio units (RRU)
• Active antenna system mMIMO (AAS)

Key features

• Latch-up immune
• Dual supply range: ±4.5 V to ±22 V
• Single supply range: 4.5 V to 44 V
• Low on-resistance: 3 Ω
• Low charge injection: 3 pC
• High current support: 400 mA (maximum)
• -40°C to +125°C operating temperature
• 1.8 V logic compatible inputs
• Fail-safe logic
• Rail-to-rail operation
• Bidirectional signal path
• Break-before-make switching