MC74HC4851ADG

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Multiplexers, demultiplexers, and analog switches are all sensible solutions for handling analog signals in modern electronics applications. MC74HC4851ADG is a popular component from ON Semiconductor in this category. This article explores the application fields and working principle of the component to give an understanding of how it works.

MC74HC4851ADG is a 16-channel multiplexer/demultiplexer analog switch with an integrated charge pump and selectable analogue switch-on/off feature. The component is characterized by low power consumption and low leakage, allowing it to be used in portable designs. It accepts analogue or digital input signals up to 5.5 volts, making it eminently suitable for mobile applications with a 5V supply.

The component can be used in a variety of applications. For example, when used as a multiplexer, it allows the user to select four channels from a single input. This is useful in applications such as channel combination, input selection, and voltage sensor selection. The component is also employed in data communication systems, as a multiplexer can reduce data transmission time and/or cost. As a demultiplexer, the component can be used to distribute a single input to up to eight output channels, enabling efficient signal routing.

The component’s working principle is relatively simple. Basically, the component acts as a switch and the control signal can be either digital or analog. Depending on the control signal, the component can route the input signal to any one of the output channels. The component features two switching modes: one with the switch on and one with the switch off. The switch-on/off feature can be used to selectively activate or deactivate particular channels. The integrated charge pump ensures that the output voltage is constant regardless of the input voltage, thus allowing the component to be used in systems with varying voltage loads.

In summary, MC74HC4851ADG is a highly integrated and versatile component for handling analog signals in a variety of applications. The component’s efficiency and low power consumption make it an attractive choice for many designs. Its ability to select from a single input and efficiently distribute to multiple outputs makes it a valuable asset for data communication and sensing applications.

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