TMUX7436F datasheet(40/50 Pages) TI2

40 / 50 page

9 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

9.1 Application Information

The TMUX7436F is a part of the fault protected switches and multiplexers family of devices. The abilty to protect

downstream components from overvoltage events up to ±60 V and latch-up immunity features makes these

switches and multiplexers suitable for harsh environments.

9.2 Typical Application

The need to monitor remote sensors is common among factory automation control systems. For example,

an analog input module or mixed module (AI, AO, DI, and DO) of a programmable logic controller (PLC)

will interface to a field transmitter to monitor various process sensors at remote locations around the factory.

A switch or multiplexer is often used to connect multiple inputs from the system and reduce the number of

downstream channels.

There are a number of fault cases that may occur that can be damaging to many of the integrated circuits.

Such fault conditions may include, but are not limited to, human error from wiring the connections incorrectly,

component failure, wire shorts, electromagnetic interference (EMI), transient distrubances, and more.

Power Module

Local Control Side

GND

Supply

Fault

Protected

Mux Inputs

TMUX7436F

+15V -15V

–

+15V

-15V

Logic Select Pins

1.8V Logic

Signals

SEL1

SEL2

Di eren al

Output

Di eren al

Output

Field Side

Control

& Processing

ADC

DAC

Sensors

ADC

+60V

+24V

S2A

S2B

S1A

S1B

Figure 9-1. Typical Application

TMUX7436F

SCDS459A – OCTOBER 2022 – REVISED NOVEMBER 2022

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