SN74HCT573NSRE4

Series:	74HCT
Packaging:	Tape & Reel (TR)
Part Status:	Active
Logic Type:	D-Type Transparent Latch
Circuit:	8:8
Output Type:	Tri-State
Voltage - Supply:	4.5 V ~ 5.5 V
Independent Circuits:	1
Delay Time - Propagation:	25ns
Current - Output High, Low:	6mA, 6mA
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.209", 5.30mm Width)
Supplier Device Package:	20-SO
Base Part Number:	74HCT573

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Introduction

SN74HCT573NSRE4 is a logic latch device from TI family of integrated logical components. It is a type of digital circuit that is used to store data (binary state levels - ‘high’ or ‘low’) and to retain this data even after the operation of power source is stopped. The latch is suitable for many applications such as data storage, synchronization, control and industrial control systems.

Application Field

The SN74HCT573NSRE4 has many applications including in data synchronizing operations, such as buffering of data in industrial systems. It can also be used as an address latch to realize an address bus. It can be used in various other systems as well, where the high resistance is desired. In addition, it can be used to store and compare information in certain control systems. It can be used to design digital systems with devices such as multiplexers, decoders, bus drivers, etc.

Main Features

SN74HCT573NSRE4 consists of 8bit of latches with active high strobe input and it has a high resistance between first and second latch with almost zero current drain. The logic state from input to output is in steady state and does not change with voltage changes. In addition to that, it offers low noise operation for low-power applications and has several protection features such as ESD protection and operation temperature ranging from -40°C to 125°C.

Working Principle

The SN74HCT573NSRE4 is a tri-state 8-bit latch with a latch enable input, that stores 8-bit data. It can operate in any mode, including multiplexing and serial data communications. When the latch enable is active, the data present at the input latch is held and output to the latch bus. When the latch enable is inactive, the data held in the latch output is no longer updated by the data on the latch input.The 8-bit input latch is connected to the 8-bit bus and for the read cycle, the data is transferred into the data latch which is enabled by the latch Enable signal. The data present at the input latch is stored and sent to the output latch when the high to low transition of latch enable is detected. For the write cycles, the data is transferred to the bus and enabled by the latch enable for the data to be transferred back to the output latch.

Conclusion

In summary, the SN74HCT573NSRE4 is an 8-bit logic latch that is suitable for many applications such as data storage, synchronization, control and industrial control systems. It is a tri-state logic latch with a latch enable input that stores the 8-bit data when the latch enable is active and the data is held in the latch output when the latch enable is inactive. It offers various advantages such as low noise operation, high resistance and several protection features.

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