April 1993
54ACTQ 74ACTQ16245
16-Bit Transceiver with TRI-STATE Outputs
General Description
The ’ACTQ16245 contains sixteen non-inverting bidirection-
al buffers with TRI-STATE outputs and is intended for bus
oriented applications The device is byte controlled Each
has separate control inputs which can be shorted together
for full 16-bit operation The T R inputs determine the direc-
tion of data flow through the device The OE inputs disable
both the A and B ports by placing them in a high impedance
state
The ’ACTQ16245 utilizes NSC Quiet Series technology to
guarantee quiet output switching and improved dynamic
threshold performance FACT Quiet SeriesTM features
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 Bidirectional non-inverting buffers
Y Separate control logic for each byte
Y 16-bit version of the ’ACTQ245
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 10926 – 1
Pin Description
Pin Names
OEn
TR
A0 – A15
B0 – B15
Description
Output Enable Input (Active Low)
Transmit Receive Input
Side A Inputs Outputs
Side B Outputs Inputs
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 10926
TL F 10926 – 2
RRD-B30M75 Printed in U S A
