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Texas Instruments TMUX734xF 8:1 & Dual 4:1 Multiplexers

Texas Instruments TMUX734xF 8:1 and Dual 4:1 Multiplexers are modern complementary metal-oxide semiconductor (CMOS) analog multiplexers in 8:1 (single-ended) and 4:1 (differential) configurations. The TMUX734xF are designed to work with dual supplies (±5V to ±22V), a single supply (8V to 44V), or asymmetric supplies (such as VDD = 12V, VSS = –5V). Overvoltage protection is available on the devices in powered and powered-off conditions, which is ideal for applications where power supply sequencing is not precisely controlled.

The TI TMUX734xF Multiplexers block fault voltages up to +60V and –60V relative to the ground in both powered and powered-off conditions. When no power supplies are present, the switch channels remain in the OFF state regardless of switch input conditions and logic control status.

The low capacitance, low charge injection, and integrated fault protection allow the TMUX7348F and TMUX7349F devices to be used in front-end data acquisition applications where high performance and high robustness are both critical. The devices are available in the standard TSSOP package and the smaller WQFN package (ideal if PCB space is limited).

Features

Integrated fault protection:
- ±85V Overvoltage protection, source to supplies or source to drain
- ±60V Overvoltage protection
- ±60V Power-off protection
- Adjustable overvoltage triggering thresholds
  - V_FP: 3V to V_DD, V_FN 0V to V_SS
- Interrupt flags to indicate overall and specific fault channel information
- Non-fault channels continue to operate with low leakage currents
- Output clamped to the fault supply in an overvoltage condition

Wide supply range:
- ±5V to ±22V Dual supply
- 8V to 44V Single supply
Latch-up immunity by device construction
1.8V Logic capable
Fail-safe logic up to 44V independent of supply
Break-before-make switching
Industry-standard TSSOP and smaller WQFN package

Applications

Factory automation and control
Programmable logic controllers (PLC)
Analog input modules
Semiconductor test equipment

Battery test equipment
Servo drive control module
Data acquisition systems (DAQ)

Texas Instruments TMUX734xF 8:1 & Dual 4:1 Multiplexers

Features

Applications

Functional Block Diagram

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