Schmidt trigger circuit

Details Schmidt trigger circuit Schmidt trigger circuit

1998-12-30

2000-07-04

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Particular stable state circuit

H03K 03037

Patent

active

060844566

ABSTRACT:
A schmidt trigger circuit capable of realizing stabilized output signals and a low-voltage/high-speed process includes an input unit for inverting input signals to output the signals to a first node and a second node; a buffering-inversion unit for sensing levels of the signals from the first and second nodes, buffering and inverting each of the signals and outputting the signals to a third node and a fourth node; and an output unit for latching each of the signals provided from the third and fourth nodes and outputting a final output signal, wherein the input unit consists of a first pull-up module connected between supply voltage and the first node, for pulling up the first node in response to the input signal; a first pull-down module connected between the second node and ground power, for pulling down the second node in response to the input signal; and a resistance module connected between the first and second nodes, to operate so that the signals of the first and second nodes respectively have different delay time from each other.

REFERENCES:
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patent: 4563594 (1986-01-01), Koyama
patent: 4719367 (1988-01-01), Denda
patent: 4812676 (1989-03-01), Yang et al.
patent: 4816702 (1989-03-01), Salina et al.
patent: 4897569 (1990-01-01), Calzi
patent: 5397946 (1995-03-01), Truong et al.
patent: 5477172 (1995-12-01), Schnizlein
patent: 5949265 (1999-09-01), Bracchitta et al.

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