8 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.

8.1 Application Information

In this application, three 2-input AND gates are combined to produce a 4-input AND gate function as shown in

Figure 8-1. The fourth gate can be used for another application in the system, or the inputs can be grounded and

the channel left unused.

This device is used to directly control the RESET pin of a motor controller. The controller requires four input

signals to all be HIGH before being enabled, and should be disabled in the event that any one signal goes LOW.

The 4-input AND gate function combines the four individual reset signals into a single active-low reset signal.

8.2 Typical Application

OC

PG

ON/OFF

RESET

Power Sup ply

Motor Con trol ler

On/Off Switch

Over

Temp

Detection

Over Current

Detection

OT

Figure 8-1. Typical application schematic

SN74ACT08-Q1

SCAS993A – MARCH 2024 – REVISED DECEMBER 2024

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