Rev.3.00, Jul.16.2004, page 1 of 8

HD74BC244A

Octal Buffers/Line Drivers With 3 State Outputs

REJ03D0281–0300Z

(Previous ADE-205-007A (Z))

Rev.3.00

Jul.16.2004

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 (1

G 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

• Ordering Information

Part Name

Package Type

Package Code

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74BC244AP

DILP-20 pin

DP-20N, -20NEV

P

—

HD74BC244AFPEL

SOP-20 pin (JEITA) FP-20DAV

FP

EL (2,000 pcs/reel)

HD74BC244ATELL

TSSOP-20 pin

TTP-20DAV

T

ELL (2,000 pcs/reel)

Note:

Please consults the sales office for the above package availability.

Function Table

Inputs

G

G

G

G

A

Output Y

HX

Z

LH

H

LL

L

H :

High level

L

:

Low level

X :

Immaterial

Z

:

High impedance