Power supply noise protection circuit

Details Power supply noise protection circuit Power supply noise protection circuit

1988-03-14

1990-01-09

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307448, 307530, 3072966, 365226, 365228, H03K 1716, H03K 301, H03K 19017

Patent

active

048930296

ABSTRACT:
A semiconductor integrated circuit has an input circuit, an internal circuit, and an output circuit. These circuits are all formed on a single chip and are connected to common power source lines. The input circuit includes an ordinary Schmitt trigger circuit, and an FET. The FET is turned on for a predetermined period of time by a control signal when the potentials of the power source lines (positive power source line and an earth line) are caused to fluctuate as a result of the internal circuit or the output circuit operating. Because of this, the level to detect the rising of the input signal is set to a level higher than the ordinary level for the period of time during which the potentials of the power source lines fluctuate.

REFERENCES:
patent: 4475048 (1984-10-01), Miyake et al.
patent: 4506168 (1985-03-01), Uya
patent: 4707626 (1987-11-01), Inoue
I.B.M. Tech. Disc. Bul., vol. 21, No. 4,. Sep. 1978, "Power Supply Stabilization Circuit".

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