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HD74BC244A

Octal Buffers/Line Drivers With 3 State Outputs

Hitachi -> Renesas Electronics 

HD74BC244A

Octal Buffers/Line Drivers With 3 State Outputs

ADE-205-007A (Z)

2nd. Edition

March 1993

Description

The HD74BC244A provides high drivability and operation equal to or better than high speed bipolar

standard logic IC by using Bi-CMOS process. The device features low power dissipation that is about 1/5

of high speed bipolar logic IC, when the frequency is 10 MHz. The device has eight inverter drivers with

three state outputs in a 20 pin package. This device is a non inverting buffer and has two active low

enables (1G and 2G). Each enable independently controls 4 buffers.

Features

• Input/Output are at high impedance state when power supply is off.

• Built in input pull up circuit can make input pins be open, when not used.

• TTL level input

• Wide operating temperature range

Ta = –40 to + 85°C

Function Table

Inputs

G

A

H

X

L

H

L

L

H : High level

L : Low level

X : Immaterial

Z : High impedance

Output Y

Z

H

L

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