SL74HC244
Octal 3-State Noninverting
Buffer/Line Driver/Line Receiver
High-Performance Silicon-Gate CMOS
The SL74HC244 is identical in pinout to the LS/ALS244. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
This octal noninverting buffer/line driver/line receiver is designed
to be used with 3-state memory address drivers, clock drivers, and
other bus-oriented systems. The device has noninverting outputs and
two active-low output enables.
ORDERING INFORMATION
SL74HC244N Plastic
SL74HC244D SOIC
TA = -55° to 125° C for all packages
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Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0 mA
High Noise Immunity Characteristic of CMOS Devices
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
Enable A,
Outputs
YA,YB
A,B
Enable B
L
L
L
H
X
L
H
Z
PIN 20=VCC
PIN 10 = GND
H
X=don’ t care
Z = high impedance
System Logic
SLS
Semiconductor
SLS [ SYSTEM LOGIC SEMICONDUCTOR ]
