CD74HC112PWR

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Introduction to CD74HC112PWR

The CD74HC112PWR is a monolithic logic device that functions as a two-input zero-crossing latch (TZL). It can be used to construct digital logic and functions such as counter circuits, temporary storage of data, and so on. This device is suitable for a wide range of applications and is available in small package sizes.

APPLICATION FIELD

CD74HC112PWR is suitable for many applications due to its small size and high speed. Several applications of CD74HC112PWR are as follows:

• Counter circuits
• Register circuits
• Sequences generator circuits
• Pulse width modulation circuits
• Shift registers
• Random number generators
• Time delay systems
• Data and address bus demultiplexers

WORKING PRINCIPLE

The CD74HC112PWR works as a two-input latch. This means that it stores the logic state of two input pins in a flipflop. The logic level of the output pins is determined by the logic states of the input pins at the time of the zero crossing. At the time of zero crossing, the logic level of the output is determined by the logic level of the first input pin before the zero crossing and the logic level of the second input pin at the time of the zero crossing.

The zero crossing detection is achieved by the use of a Zero Crossing Detector (ZCD). This circuit monitors the voltage of the supply and detects the point of zero crossing. When the voltage of the supply changes from positive to negative (and vice versa) the zero crossing detector circuit produces an output to trigger the latch and store the logic state of the input pins.

The CD74HC112PWR has two input pins, CLK (clock) and DATA. The CLK pin is used to trigger the latch. When the voltage of the CLK pin reaches the zero crossing point, the DATA pin is read and the logic level of the output pins is determined. The output pins are Q0 and Q1. These are the latched versions of the DATA and CLK pins respectively. The output pins can only change their logic level when the CLK pin changes state.

Conclusion

The CD74HC112PWR is a versatile monolithic logic device that can be used for a wide range of applications. It is a two-input zero-crossing latch (TZL) that can be used to store data, construct counter circuits, and much more. The device is small in size, durable, and has a high speed making it suitable for many applications. The device works by detecting the zero crossing and then storing the logic levels of the input pins in the output latch. The output latch can then be used to construct a variety of circuits.

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