HD74LVC245A

Octal Bidirectional Transceivers with 3-state Outputs

ADE-205-111B(Z)

3rd Edition

December 1996

Description

The HD74LVC245A has eight buffers with three state outputs in a 20 pin package. When (T /

R) is high,

data flows from the A inputs to the B outputs, and when (T /

R) is low, data flows from the B inputs to the

A outputs. A and B bus are separated by making enable input (

OE) high level. Low voltage and high

speed operation is suitable at the battery drive product (note type personal computer) and low power

consumption extends the life of a battery for long time operation.

Features

• V

• All inputs V

• All input outputs V

• Typical V

• Typical V

• High output current ±24 mA (@V

Function Table

Inputs

OE

T /

R

Operation

L

L

B data to A bus

L

H

A data to B bus

HX

Z

H :

High level

L :

Low level

X :

Immaterial

Z :

High impedance