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Texas Instruments TMUX7234 2:1 4-Channel Precision Multiplexer

Texas Instruments TMUX7234 2:1 4-Channel Precision Multiplexer is a complementary metal-oxide semiconductor (CMOS) multiplexer with latch-up 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 (4.5V to 44V), dual supplies (±4.5V to ±22V), or asymmetric supplies (such as VDD = 12V, VSS = –5V). 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 1.8V to VDD, ensuring 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 Texas Instruments 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, leading to device failure. The latch-up immunity feature allows the TMUX72xx family of switches and multiplexers to be used in harsh environments.

Features

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

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)

Functional Block Diagram

Block Diagram - Texas Instruments TMUX7234 2:1 4-Channel Precision Multiplexer
Inilathala: 2021-09-02 | Na-update: 2022-03-11