54ACQ240 Datasheet, PDF (1/8 Pages) National Semiconductor (TI) – Quiet Series Octal Buffer/Line Driver with TRI-STATE Outputs

February 1999
54ACQ240 • 54ACTQ240
Quiet Series Octal Buffer/Line Driver with TRI-STATE^®
Outputs
General Description
The ’ACQ/’ACTQ240 is an inverting octal buffer and line
driver designed to be employed as a memory address driver,
clock driver and bus oriented transmitter or receiver which
provides improved PC board density. The ’ACQ/’ACTQ uti-
lizes NSC Quiet Series technology to guarantee quiet output
switching and improve dynamic threshold performance.
FACT Quiet Series™ features GTO™ output control and un-
dershoot corrector in addition to a split ground bus for supe-
rior performance.
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
n Improved latch-up immunity
n Inverting TRI-STATE outputs drive bus lines or buffer
memory address registers
n Outputs source/sink 24 mA
n Faster prop delays than the standard ’ACT240
n 4 kV minimum ESD immunity
n Standard Microcircuit Drawing (SMD)
’ACTQ240: 5962-92184
Features
n I_CC and I_OZ reduced by 50%
Logic Symbol
Connection Diagrams
IEEE/IEC
Pin Assignment
for DIP and Flatpak
Pin Names
OE₁, OE₂
I₀– I₇
O₀– O₇
DS100235-1
Description
TRI-STATE Output Enable Inputs
Inputs
Outputs
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.
© 1999 National Semiconductor Corporation DS100235
DS100235-2
Pin Assignment
for LCC
DS100235-3
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