Connection Diagrams

Functional Description

The ’AC/’ACT373 contains eight D-type latches with

TRI-STATE standard outputs. When the Latch Enable (LE)

input is HIGH, data on the D

this condition the latches are transparent, i.e., a latch output

will change state each time its D input changes. When LE is

LOW, the latches store the information that was present on

the D inputs a setup time preceding the HIGH-to-LOW tran-

sition of LE. The TRI-STATE standard outputs are controlled

by the Output Enable (OE) input. When OE is LOW, the stan-

dard outputs are in the 2-state mode. When OE is HIGH, the

standard outputs are in the high impedance mode but this

does not interfere with entering new data into the latches.

Truth Table

Inputs

Outputs

LE

OE

D

n

O

n

XHX

Z

HL

L

L

HLH

H

LL

X

O

0

H = HIGH Voltage Level

L = LOW Voltage Level

Z = High Impedance

X = Immaterial

Pin Assignment for DIP

and Flatpak

DS100329-3

Pin Assignment for LCC

DS100329-4

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