MM74HC138N

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Logic-Signal Switches, Multiplexers, Decoders are the application fields of MM74HC138N. It is a part of the 74HC family of logic integrated circuits, which are integrated logic circuits having fair to excellent noise immunity, high speed and low power consumption. It consists of a 3-line to 8-line decoder and its function is to activate one of the outputs, depending on the input address.

MM74HC138N is high-speed CMOS logic. Its features include high-speed operation, multiple inputs and high-noise immunity. It is commonly used in applications such as data transmission, multiplexing, addressing and data buffering. This device includes inputs for data and control, as well as output lines for buffering the data.

The working principle of MM74HC138N is that it detects the logic on the control and address inputs, and then activates one of its eight output lines, based on the address information. This is done by decoding the data into eight intermediate signals and then forming a logic device called a decoder. The decoder is used to generate the eight output lines.

When a low logic level is applied to the EN input (the enable input), the device functions normally. When the EN input is high, all output lines are disabled, regardless of the input address. A low level applied to the EN input indicates that data is present. The decoder will then decode the address and activate the output line corresponding to the address.

The MM74HC138N is an ideal choice for data multiplexing and data buffering applications. It can be used to increase the number of inputs, reduce the number of output lines and reduce power consumption. Its high speed and noise immunity make it a good choice for complex data processing applications.

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