TL/F/6431
DM54LS373/DM74LS373, DM54LS374/DM74LS374
TRI-STATE Octal D-Type Transparent Latches and Edge-Triggered Flip-Flops
May 1992
DM54LS373/DM74LS373,
DM54LS374/DM74LS374
TRI-STATE
É
Octal D-Type Transparent
Latches and Edge-Triggered Flip-Flops
General Description
These 8-bit registers feature totem-pole TRI-STATE outputs
designed specifically for driving highly-capacitive or relative-
ly low-impedance loads. The high-impedance state and in-
creased high-logic level drive provide these registers with
the capability of being connected directly to and driving the
bus lines in a bus-organized system without need for inter-
face or pull-up components. They are particularly attractive
for implementing buffer registers, I/O ports, bidirectional
bus drivers, and working registers. (Continued)
Features
Y
Choice of 8 latches or 8 D-type flip-flops in a single
package
Y
TRI-STATE bus-driving outputs
Y
Full parallel-access for loading
Y
Buffered control inputs
Y
P-N-P inputs reduce D-C loading on data lines
Connection Diagrams
Dual-In-Line Packages
’LS373
TL/F/6431–1
Order Number
DM54LS373J,
DM54LS373W,
DM74LS373N or
DM74LS373WM
See NS Package Number
J20A, M20B, N20A or
W20A
’LS374
TL/F/6431–2
Order Number
DM54LS374J,
DM54LS374W,
DM74LS374WM or
DM74LS374N
See NS Package Number
J20A, M20B, N20A or
W20A
TRI-STATE
É
is a registered trademark of National Semiconductor Corp.
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
