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.
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
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
Ordering Code
Military Package Package Description
Number
54ABT244J-QML J20A 20-Lead Ceramic Dual-In-Line
54ABT244W-QML W20A 20-Lead Cerpack
54ABT244E-QML E20A 20-Lead Ceramic Leadless Chip Carrier, Type C
Connection Diagrams
Pin
Names
Description
OE
1
,OE
2
Output Enable Input
(Active Low)
I
0
–I
7
Inputs
O
0
–O
7
Outputs
Truth Table
OE
1
I
0–3
O
0–3
OE
2
I
4–7
O
4–7
HXZHXZ
LHHLHH
LLLLLL
H=HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
Pin Assignment for
DIP and Flatpak
DS100203-1
Pin Assignment for LCC
DS100203-2
July 1998
54ABT244
Octal
Buffer/Line
Driver
with
TRI-ST
A
T
E
Outputs
© 1998 National Semiconductor Corporation DS100203 www.national.com