MC74AC244(2015) 查看數據表（PDF） - ON Semiconductor

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MC74AC244
(Rev.:2015)

Octal Buffer/Line Driver with 3-State Outputs

ON Semiconductor 

MC74AC244, MC74ACT244

Octal Buffer/Line Driver

with 3-State Outputs

The MC74AC244/74ACT244 is an octal buffer and line driver

designed to be employed as a memory address driver, clock driver and

bus oriented transmitter/receiver which provides improved PC board

density.

Features

• 3−State Outputs Drive Bus Lines or Buffer Memory Address

Registers

• Outputs Source/Sink 24 mA

• ′ACT244 Has TTL Compatible Inputs

• These are Pb−Free Devices

VCC OE2

20 19 18 17 16 15 14 13 12 11

www.onsemi.com

SOIC−20W

DW SUFFIX

CASE 751D

1

TSSOP−20

DT SUFFIX

CASE 948E

1

1 2 3 4 5 6 7 8 9 10

OE1

GND

Pinout: 20−Lead Packages Conductors (Top View)

TRUTH TABLE

Inputs

Outputs

OE1 D (Pins 12, 14, 16, 18)

LL

L

LH

H

HX

Z

NOTE:

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Z = High Impedance

TRUTH TABLE

Inputs

Outputs

OE2 D

LL

LH

HX

(Pins 3, 5, 7, 9)

L

H

Z

NOTE:

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Z = High Impedance

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 5 of this data sheet.

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 5 of this data sheet.

© Semiconductor Components Industries, LLC, 2015

1

February, 2015 − Rev. 8

Publication Order Number:

MC74AC244/D

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