March 1993
74ACQ543 54ACTQ 74ACTQ543
Quiet Series Octal Registered Transceiver with
TRI-STATE Outputs
General Description
The ACQ ACTQ543 is a non-inverting octal transceiver
containing two sets of D-type registers for temporary stor-
age of data flowing in either direction Separate Latch En-
able and Output Enable inputs are provided for each regis-
ter to permit independent input and output control in either
direction of data flow
The ACQ ACTQ utilizes NSC Quiet Series technology to
guarantee quiet output switching and improved dynamic
threshold performance FACT Quiet SeriesTM features
GTOTM output control and undershoot corrector in addition
to a split ground bus for superior performance
Features
Y Guaranteed simultaneous switching noise level and
dynamic threshold performance
Y Guaranteed pin-to-pin skew AC performance
Y 8-bit octal latched transceiver
Y Separate controls for data flow in each direction
Y Back-to-back registers for storage
Y Outputs source sink 24 mA
Y 4 kV minimum ESD immunity
Y 300 mil slim PDIP SOIC
Y Standard Military Drawing (SMD)
54ACTQ543 5962-9219201
Logic Symbols
Connection Diagrams
Pin Assignment for
DIP SOIC QSOP and Flatpak
Pin Assignment
for LCC
TL F 10154 – 1
IEEE IEC
TL F 10154 – 2
TL F 10154 – 3
TL F 10154 – 4
FAST and TRI-STATE are registered trademarks of National Semiconductor Corporation
FACTTM FACT Quiet SeriesTM and GTOTM are trademarks of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 10154
RRD-B30M75 Printed in U S A
