54ABT244 Octal Buffer/Line Driver with TRI-STATE Outputs
July 1998
54ABT244
Octal Buffer/Line Driver with TRI-STATE
®
Outputs
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.
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
n
Standard Microcircuit Drawing (SMD) 5962-9214701
Features
n
Non-inverting buffers
n
Output sink capability of 48 mA, source capability of
24 mA
n
Output switching specified for both 50 pF and 250 pF
loads
Ordering Code
Military
54ABT244J-QML
54ABT244W-QML
54ABT244E-QML
Package
Number
J20A
W20A
E20A
20-Lead Ceramic Dual-In-Line
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier, Type C
Package Description
Connection Diagrams
Pin Assignment for
DIP and Flatpak
Pin Assignment for LCC
DS100203-2
DS100203-1
Pin
Names
OE
1
, OE
2
I
0
–I
7
O
0
–O
7
Description
Output Enable Input
(Active Low)
Inputs
Outputs
Truth Table
OE
1
H
L
L
I
0–3
X
H
L
O
0–3
Z
H
L
OE
2
H
L
L
I
4–7
X
H
L
O
4–7
Z
H
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100203
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
