SN74BCT573NSRE4

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The SN74BCT573NSRE4 is a part of a series of octal transparent latches and registers. It is a highly integrated component containing eight non-inverting 3-state latches that control the data flow between two buses. This 8-bit latch includes a common strobe or enable input and three-state outputs for bus oriented applications. Despite its wide range of use, it is small enough to be mounted on a small board or embedded in large-scale integrated circuits (LSI).

Application Field

The SN74BCT573NSRE4 latch is designed for a wide range of applications. It is ideally suited for use in multi-bus systems, including those employed in address translation, external memories, as well as system control and data-flow paths. This component can also be used in military, medical, automotive, and power electronics applications. In addition to its versatility, the SN74BCT573NSRE4 also offers improved noise immunity, low power consumption and a fast switching speed.

Working Principle

The SN74BCT573NSRE4 latch consists of eight edge-triggered, 3-state latches. Each latch has two active-low inputs: a data (D) input and a control (E or enable) input. When in the non-tri-state mode (i.e. E is low), the latch will store a data bit received on the D input, and it will remain stored even after the E input is released. All eight latches can be powered in parallel with the same control signal, simplifying the design process. The output of the latch will read the stored data bit whenever the E signal is low.

When in the tri-state mode (i.e. E input is high), the outputs of the SN74BCT573NSRE4 become high impedance, allowing data to be exchanged between buses without interference from the latches. In other words, the E signal is used to enable or disable data transmission through the latch. This is especially advantageous for multi-bus systems, where competing buses may otherwise interfere with each other. Additionally, the common enable pin of the SN74BCT573NSRE4 can be used to enable or disable all the latches with a single signal, making them easier to manage.

The SN74BCT573NSRE4 latch also features a die-to-die isolation feature, which provides additional protection against crosstalk. This eliminates the need for extra components to guard against errors caused by noise. On the other hand, the wide supply voltage range of 4.75V to 5.25V makes the device suitable for a range of applications. The SN74BCT573NSRE4 is also capable of operating at a maximum temperature of 85°C with a response time of 6ns.

Conclusion

In conclusion, the SN74BCT573NSRE4 is a versatile 8-bit octal transparent latch and register with several advantageous features. It is suitable for a wide variety of applications and offers enhanced noise immunity, low power consumption and a fast switching speed. Additionally, its die-to-die isolation feature ensures data accuracy, while its wide supply voltage range allows for flexibility in system design. With these attributes, the SN74BCT573NSRE4 is an ideal choice for multi-bus systems.

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