型号: 74LS373
厂商: Texas Instruments Texas Instruments
描述: tri-statee octal D-type transparent latches and edge-triggered flip-flops
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May 1992  
DM54LS373/DM74LS373,  
DM54LS374/DM74LS374  
TRI-STATE Octal D-Type Transparent  
Latches and Edge-Triggered Flip-Flops  
É
General Description  
Features  
Y
Choice of 8 latches or 8 D-type flip-flops in a single  
package  
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  
Y
Y
Y
Y
TRI-STATE bus-driving outputs  
Full parallel-access for loading  
Buffered control inputs  
P-N-P inputs reduce D-C loading on data lines  
bus drivers, and working registers.  
(Continued)  
Connection Diagrams  
Dual-In-Line Packages  
’LS373  
Order Number  
DM54LS373J,  
DM54LS373W,  
DM74LS373N or  
DM74LS373WM  
See NS Package Number  
J20A, M20B, N20A or  
W20A  
TL/F/6431–1  
’LS374  
Order Number  
DM54LS374J,  
DM54LS374W,  
DM74LS374WM or  
DM74LS374N  
See NS Package Number  
J20A, M20B, N20A or  
W20A  
TL/F/6431–2  
TRI-STATEÉ is a registered trademark of National Semiconductor Corp.  
C
1995 National Semiconductor Corporation  
TL/F/6431  
RRD-B30M105/Printed in U. S. A.