July 1998
54ABT244
Octal Buffer/Line Driver with TRI-STATE® Outputs
n Guaranteed simultaneous switching, noise level and
dynamic threshold performance
n Guaranteed latchup protection
n High impedance glitch free bus loading during entire
power up and power down cycle
n Nondestructive hot insertion capability
n Disable time less than enable time to avoid bus
contention
General Description
The ’ABT244 is an octal buffer and line driver with
TRI-STATE outputs designed to be employed as a memory
and address driver, clock driver, or bus-oriented transmitter/
receiver.
Features
n Non-inverting buffers
n Output sink capability of 48 mA, source capability of
n Standard Microcircuit Drawing (SMD) 5962-9214701
24 mA
n Output switching specified for both 50 pF and 250 pF
loads
Ordering Code
Military
Package
Number
J20A
Package Description
54ABT244J-QML
54ABT244W-QML
54ABT244E-QML
20-Lead Ceramic Dual-In-Line
W20A
20-Lead Cerpack
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagrams
Pin Assignment for
DIP and Flatpak
Pin Assignment for LCC
DS100203-2
DS100203-1
Truth Table
Pin
Description
Names
OE1 I0–3 O0–3 OE2
I4–7 O4–7
OE1, OE2
Output Enable Input
(Active Low)
Inputs
H
L
L
X
H
L
Z
H
L
H
L
L
X
H
L
Z
H
L
I0–I7
O0–O7
Outputs
=
=
=
=
H
L
X
Z
HIGH Voltage Level
LOW Voltage Level
Immaterial
High Impedance
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100203
www.national.com
NSC [ National Semiconductor ]
