August 1998
54ACQ244 • 54ACTQ244
Quiet Series Octal Buffer/Line Driver with TRI-STATE®
Outputs
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
General Description
The ’ACQ/’ACTQ244 is an octal buffer and line driver de-
n Improved latch-up immunity
signed to be employed as a memory address driver, clock
n TRI-STATE outputs drive bus lines or buffer memory
driver and bus oriented transmitter or receiver which pro-
address registers
vides improved PC board density. The ACQ/ACTQ utilizes
NSC Quiet Series technology to guarantee quiet output
switching and improved dynamic threshold performance.
n Outputs source/sink 24 mA
n Faster prop delays than the standard ’AC/’ACT244
n 4 kV minimum ESD immunity
n Standard Microcircuit Drawing (SMD)
— ’ACTQ244: 5962-92186
™
™
FACT Quiet Series features GTO output control and un-
dershoot corrector in addition to a split ground bus for supe-
rior performance.
— ’ACQ244: 5962-92176
Features
n ICC and IOZ reduced by 50%
Logic Symbol
Connection Diagrams
IEE/IEC
Pin Assignment
for DIP and Flatpak
DS100236-2
DS100236-1
Pin Names
OE1, OE2
I0–I 7
Description
TRI-STATE Output Enable Inputs
Inputs
Pin Assignment
for LCC
O0–O 7
Outputs
DS100236-3
™
GTO is a trademark of National Semiconductor Corporation.
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
™
FACT Quiet Series is a trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100236
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