54ABT244 Datasheet, PDF (1/10 Pages) National Semiconductor (TI) – 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.
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
54ABT244J-QML
54ABT244W-QML
54ABT244E-QML
Package
Number
J20A
W20A
E20A
Connection Diagrams
Package Description
20-Lead Ceramic Dual-In-Line
20-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier, Type C
Pin Assignment for
DIP and Flatpak
Pin Assignment for LCC
DS100203-1
Pin
Names
OE₁, OE₂
I₀– I₇
O₀– O₇
Description
Output Enable Input
(Active Low)
Inputs
Outputs
TRI-STATE^® is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100203
DS100203-2
Truth Table
OE₁
H
I_0–3 O_0–3
XZ
L HH
L
L
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
OE₂
H
L
L
I_4–7 O_4–7
XZ
HH
LL
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