Patent ID: 6084456
Filing Date: 2000-07-04
Classification: H03K

Abstract:
A schmidt trigger circuit comprising:input means for inverting input signals and outputting the signals to a first node and a second node;buffering means for sensing levels of the signals from said first and second nodes, buffering and inverting each of the signals and outputting the signals to a third node and a fourth node; andoutput means for latching each of the signals provided from the third and fourth nodes and outputting a final output signal,wherein said input means comprises:a first pull-up module connected between supply voltage and the first node, for pulling up said first node in response to the input signal;a first pull-down module connected between the second node and ground power, for pulling down said second node in response to the input signal; anda resistance module connected between the first and second nodes, said resistance module operating so that the signals of said first and second nodes respectively have different delay time from each other.