ELECTRONIC CIRCUIT FOR PROTECTION FROM INBOUND SIGNAL NOISE CAUSED BY INDUCTIVELY COUPLED OUTBOUND SIGNAL TRANSITIONS BY CONTROLLING DECISION THRESHOLD AND THE METHOD THEREOF

摘要

Noise-immunity (noise-immune) electronic circuitry receiving an input signal through the input transmission line and the one predetermined discrete levels based on the relative size of the input signal and the decision threshold value by comparing the input signal and determines the threshold value having an output circuit for transmitting the output signal to receive an input circuit and the output data of the electronic circuit that generates the input data of the electronic circuit, and generates therefrom an output signal on an output transmission line. The input and output transmission line are coupled together inductively if a voltage transition has occurred in the transmission signal output, the noise is introduced into the received input signal. In order to avoid decision errors in the input circuit, the noise protection circuit is provided, at the time that matches the noise generated on the input signal in response to a voltage transition of the output data of the electronic circuit for controlling the decision threshold value, the FIG noise is present the input circuit does not generate a decision error.