MC74HC390ADG

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Logic devices can be used for various applications - from displaying digital information to performing mathematical operations. One example of this is the MC74HC390ADG device, a dual binary counter which falls under the category of counters, dividers, and other related logic devices. It provides a wider range of count modulation and frequency division applications. This article will discuss the application field and working principle of the MC74HC390ADG.The MC74HC390ADG is a fully-static, dual binary counter. It is used in applications such as frequency divider, cycle-based timer, synthesizer, and memory address or data generation. Its other features include a low voltage operation, high speed logic performance, and low power dissipation. Its twin binary counter system uses two counters to count two independent 4-bit binary numbers.In terms of its application field, the MC74HC390ADG is most commonly used for frequency division and cycle-based timer applications. Frequency division uses the counter to divide the input frequency into lower sub-frequencies. It can be used in various applications such as digital control systems, communication systems, radar systems and mobile communications. The MC74HC390ADG is also well suited for frequency division applications requiring high speed logic performance at low levels of power dissipation.The cycle-based timer application of the MC74HC390ADG utilizes the two counters to count two independent 4-bit binary numbers. This allows for an event to occur when predetermined the 6-bit output occurs. The device can be used for a variety of time-based events such as time delay, waveform generation, and motor speed control.In terms of working principle, the MC74HC390ADG contains two 4 stage binary counters which are connected in a dual counter system. The Reset terminal on the device allows for resetting of both counters simultaneously. When the Device Enable input is high, the counters are enabled and count in accordance to the input Clock signal. For synchronized momentary resets, the Device Enable and clock inputs can be used simultaneously.The MC74HC390ADG is also equipped with a Stop input which monitors the progress of the count and can be used to stop the count at any point. Upon receiving a negative pulse on this input, the counts are frozen and will continue when the input is removed. The device also has a set of 6 output pins which provide the 4-bit binary output of each counter in a sequentially alternating sequence.The MC74HC390ADG can be used in a variety of count modulation and frequency division applications. Its operation relies on two 4-stage binary counters which are connected in a dual counter system. The device also has several helpful features such as the Set, Reset, Device Enable and Stop inputs, which makes it well suited for different applications. Furthermore, its low voltage operation and high speed logic performance makes it one of the ideal choices for a range of frequency division applications.

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