74HCT390D,652

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Logic devices like the 74HC390D,652, can be used to facilitate digital functions. The device is used in the form of counters, dividers or as a prescaler. In some cases, the device works as a divide-by-n counter, which can be used to calculate frequency or time intervals. In this article, we will explore the application field and working principle of the 74HC390D,652 logic device.

What is the 74HC390D,652?

The 74HC390D,652 is a dual, 8-bit counter and prescaler device, which consists of two 16-bit registers. Each register can be chained to form a 32-bit counter. The prescaler is a divide-by-n counter that can be programmed through a 3-line selector to divide the input frequency by 2, 4, 8, 16, 32, and 64. This creates a simple interface for controlling the output frequency, providing control over a range from frequencies from 0 to 64.

Application Field of the 74HC390D,652

The 74HC390D,652 is often used in applications where an adjustable clock frequency is required, such as in frequency dividers, media players, or digital signal processors. It can also be used in other areas such as power supplies, and frequency generators. Its use as a prescaler in digital systems allows the frequency of the system to be changed in a very simple manner.

The 74HC390D,652 can also be used in research and development applications, such as in testing of systems and circuits. When used in combination with the appropriate external circuitry, it can be used to pulse digital signals in a very precise manner. This is useful in the design of digital oscillators, as well as in research and development of scientific instruments and medical equipment.

Working Principle of the 74HC390D,652

The 74HC390D,652 works by dividing the input frequency by 2, 4, 8, 16, 32 or 64 (depending on what is selected with the 3-line selector). The divider is reset by a logic pulse. This logic pulse can be used to synchronize systems, or to generate signals on demand. The device can also be used to control the duty cycle of a signal, by changing the divisor value.

When used as a frequency divider, the 74HC390D,652 can also be used to measure frequency accurately, due to its smooth count rate. The device also supports both up-counting and down-counting, which makes the device more versatile. The device can also be used as a prescaler device, which conditions a signal before it is sent to the next part of a digital system.

In addition, the device supports several run modes, such as gated run, cascaded run and trigger run. The device is also highly configurable, allowing the user to select different clock edges and reset logic signals. This makes the 74HC390D,652 very useful in frequency synthesizers, as it can be used to precisely track a frequency.

Conclusion

The 74HC390D,652 is a highly versatile logic device that can be used as a counter, prescaler, and frequency divider. It can be used to accurately measure frequencies or to control the duty cycle of signals. Itis highly configurable and is often used in test and development applications as well as in commercial digital applications.

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