10 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.

10.1 Application Information

The TMUX7411F, TMUX7412F, and TMUX7413F are 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.

10.2 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

V

GND

Supply

Fault

Protected

Mux Inputs

S1

S2

S3

S4

D1

D2

D3

D4

TMUX7412F

V

DD

V

SS

+15V -15V

+

±

+15V

-15V

Logic Select Pins

1.8V Logic

Signals

SEL1

SEL2

SEL3

SEL4

Differential

Output

Differential

Output

+

+

-

-

Field Side

Control

& Processing

ADC

DAC

Sensors

Sensors

Sensors

Sensors

RG

ADC

+60V

+24V

Figure 10-1. Typical Application

www.ti.com

TMUX7411F, TMUX7412F, TMUX7413F

SCDS404 – MARCH 2021

Copyright © 2021 Texas Instruments Incorporated

Submit Document Feedback

25

Product Folder Links: TMUX7411F TMUX7412F TMUX7413F