SN74LS390DRG4

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The SN74LS390DRG4 is part of the SN74LS00DR Logic family made by Texas Instruments. It is mainly designed for counters, dividers, and other applications. In this article, we will discuss the application field and working principle of the SN74LS390DRG4.

Overview of SN74LS390DRG4

The SN74LS390DRG4 is a 7 stage divide-by-128 ripple counter, which can be cascaded up to 16 stages for an even higher division rate. It has two 9-bit registers for storing results and a power-on reset circuit for storage on power up. It can be triggered from either a low- or high-level input. The maximum operating voltage is ±10V and the maximum operating temperature is +125 °C.

Applications

The SN74LS390DRG4 can be used in a variety of applications including PWM controllers, frequency dividers, analog-to-digital converters, and pulse width modulators. In addition, it can be used as a building block to make digital clocks, timers, and counters. It can also be used in applications such as motion control, energy management, and manufacturing equipment.

Working Principle

At the heart of the SN74LS390DRG4 is a flip-flop house, which serves as the main counting element. When triggered from either a low- or high-level input, the SN74LS390DRG4 will begin counting the incoming pulse train. As the count increases, the state of the flip flop house is changed, and the output on each of the seven outputs is sent along to the next stage. This process is repeated until the desired division rate is achieved.

Conclusion

The SN74LS390DRG4 is a versatile and efficient device for counting, divide-by-128 operations, and other applications. It has two 9-bit registers for storing results and a power-on reset circuit for storage on power up. It can be used in a variety of applications including PWM controllers, frequency dividers, analog-to-digital converters, and pulse width modulators. We hope you enjoyed learning about this device and its applications.

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