N74F257AD,602

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Logic - Signal Switches, Multiplexers, Decoders is a type of Unipolar-digital circuits which are widely used in computer applications. N74F257AD,602 is one kind of logic - signal switch, multiplexer and decoder. It is widely used in logic-signal applications such as TTL to CMOS signal conversion, signal sampling, and gate switching.

Application Field of N74F257AD,602

The N74F257AD,602 is a dual 4-channel multiplexer (MUX) with an enable/disable control signal(EN). It provides four inputs labeled A, B, C, and D, and one output for each multiplexer. Each pair of multiplexers is controlled by a separate Enable/Disable (EN) signal. The Enable signal determines which multiplexers in the pair is selected. The N74F257AD,602 can be used in many applications, like controlling keypad, interface logic lines from CPU to interface circuit,communication device and so on.

Working Principle of N74F257AD,602

The N74F257AD,602 is a dual 4-channel multiplexer with two enable/disable control signals (EN1 and EN2). When the enable signal (EN1or EN2) is logically high, it selects the corresponding multiplexer and the other multiplexer will not be selected. When the enable signal (EN1or EN2) is logically low, both multiplexers will be selected. The two inputs (A,B,C and D) of the multiplexer will be connected and the output is dependent on the input. For example, if the inputs A and B are both logic high and the inputs C and D are both logic low, then the output will be logic high.

Conclusion

The N74F257AD,602 is a dual 4-channel multiplexer/decoder, belonging to Logic - Signal Switches, Multiplexers, Decoders. It is used in TTL to CMOS signal conversion, signal sampling, and gate switching. It offers some good properties like having dual 4-channel multiplexers, one output for each multiplexer and one enable/disable control signal which helps to select the corresponding multiplexer.

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