54AC373F datasheet(2/10 Pages) NSC

Il numero della parte	54AC373F

Spiegazioni elettronici	Octal Transparent Latch with TRI-STATE Outputs

PDF	10 Pages

Scroll/Zoom	100%

Produttore elettronici	NSC [National Semiconductor (TI)]

Homepage	http://www.national.com

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2 / 10 page

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

n inputs enters the latches. In

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

XHX

HLH

H = HIGH Voltage Level

L = LOW Voltage Level

Z = High Impedance

X = Immaterial

O0 = Previous O0 before HIGH to Low transition of Latch Enable

Pin Assignment for DIP

and Flatpak

DS100329-3

Pin Assignment for LCC

DS100329-4

54AC373F Scheda tecnica(PDF) 2 Page - National Semiconductor (TI)