March 1993
54ACTQ 74ACTQ16373
16-Bit Transparent Latch with TRI-STATE Outputs
General Description
The ’ACTQ16373 contains sixteen non-inverting latches
with TRI-STATE outputs and is intended for bus oriented
applications The device is byte controlled The flip-flops ap-
pear transparent to the data when the Latch Enable (LE) is
HIGH When LE is low the data that meets the setup time is
latched Data appears on the bus when the Output Enable
(OE) is LOW When OE is HIGH the outputs are in high Z
state The ’ACTQ16373 utilizes NSC Quiet Series technolo-
gy to guarantee quiet output switching and improved dy-
namic threshold performance FACT Quiet SeriesTM fea-
tures GTOTM output control for superior performance
Features
Y Utilizes NSC FACT Quiet Series technology
Y Guaranteed simultaneous switching noise level and
dynamic threshold performance
Y Guaranteed pin-to-pin output skew
Y Separate control logic for each byte
Y 16-bit version of the ’ACTQ373
Y Outputs source sink 24 mA
Y Additional specs for Multiple Output Switching
Y Output Loading specs for both 50 pF and 250 pF loads
Logic Symbol
Connection Diagram
Pin Assignment for SSOP
and CERPAK
TL F 10934 – 1
Pin Description
Pin Names
OEn
LEn
I0 – I15
O0 – O15
Description
Output Enable Input (Active Low)
Latch Enable Input
Inputs
Outputs
TRI-STATE is a registered trademark of National Semiconductor Corporation
FACTTM FACT Quiet SeriesTM and GTOTM are trademarks of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 10934
TL F 10934 – 2
RRD-B30M75 Printed in U S A
