CD4072BE

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Logic gates are fundamental building blocks for digital circuits. They will accept one or more digital inputs, and in response to the current input(s) will output either a high or low voltage signal. This signal can then be transferred to additional logic gates or circuits downstream. The CD4072BE is a logic gate part number from the 4000 logic gates and sets manufactured by Texas Instruments. This logic gate operates as an OR gate and provides one output (Y) based on one or more logic inputs (A,B).

Application Fields

The CD4072BE can find many uses in digital circuit applications that require some kind of Boolean logic function. Even though the chip has only two inputs, this OR gate can be used effectively in variety of ways. Examples can include so called ‘grunt’ circuits, where it would be used in conjunction with other logic gates to form a set or logic rules. Additionally, it can be used to provide a simple digital logic operation on a signal like toggling or switching between two points. Lastly, CD4072BE can be used in monitoring circuits for switches, sensors, relays, and a variety of other digital components that provide a high and low state.

Working Principle

The principle of operation for this OR gate logic chip is based on a series of transistors that are connected within the CD4072BE microchip. In order to understand why the chip produces a high/low output, it is important to note that transistors behave as a method of ‘amplification’. In other words, if there is a high voltage present at the gate of the transistor, then it will allow current to pass though the device, if not, the transistor will be off, and current will not flow. This is exactly how the CD4072BE works, when viewed on a microlevel, the chip will work like an amplifier, where the input voltage will turn the transistor either off or on, and the amplified output will be translated into either a low or high state. This means that if one or more of the input pins are low, the output will also be low, however, if one or more inputs are high, then the output will be high (1).

Conclusion

The CD4072BE is an OR gate part number from the 4000 logic gates and sets currently manufactured by Texas Instruments. This logic gate provides one output (Y) based on one or more logic inputs (A,B). The chip find applications ranging from grunt logic circuit work, to switch monitoring. Operation of the logic gate is based on current flow through transistor, meaning that if one or more of the inputs are high the output will also be high (1).

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