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
http://onsemi.com
•
3−State Outputs Drive Bus Lines or Buffer Memory Address
Registers
•
Outputs Source/Sink 24 mA
•
′ACT244
Has TTL Compatible Inputs
•
Pb−Free Packages are Available*
V
CC
20
OE
2
19
18
17
16
15
14
13
12
11
1
PDIP−20
N SUFFIX
CASE 738
1
SOIC−20W
DW SUFFIX
CASE 751D
1
OE
1
2
3
4
5
6
7
8
9
10
GND
1
TSSOP−20
DT SUFFIX
CASE 948E
Pinout: 20−Lead Packages Conductors
(Top View)
TRUTH TABLE
Inputs
OE
1
L
L
H
NOTE:
D
L
H
X
Outputs
(Pins 12, 14, 16, 18)
L
H
Z
1
SOEIAJ−20
M SUFFIX
CASE 967
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
DEVICE MARKING INFORMATION
TRUTH TABLE
Inputs
OE
2
L
L
H
NOTE:
D
L
H
X
Outputs
(Pins 3, 5, 7, 9)
L
H
Z
See general marking information in the device marking
section on page 6 of this data sheet.
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
*For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
©
Semiconductor Components Industries, LLC, 2006
1
September, 2006 − Rev. 7
Publication Order Number:
MC74AC244/D