Semiconductor integrated circuit device having logic level conve

Details Semiconductor integrated circuit device having logic level conve Semiconductor integrated circuit device having logic level conve

1992-04-06

1994-06-21

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307448, 307443, 3072968, 307310, H03K 190175, H03K 19094

Patent

active

053230710

ABSTRACT:
A semiconductor integrated circuit device has an input logic level conversion circuit which receives an external input signal and some reference voltages, an internal logic circuit connected between a first and a second power supply terminal, which receives an output voltage from the input logic level conversion circuit and outputs an output signal at an output terminal, and a standard voltage generation circuit connected between the first and second power supply terminals, which has the same circuit configuration as that of the internal logic circuit and which outputs a standard voltage whose level is identical with the threshold value of the internal logic circuit. The standard voltage is supplied to the input logic level conversion circuit as one of the reference voltages. The standard voltage generation circuit is formed by at least a driver FET, a load element and a negative feedback resistor. The level matching between the level of the external input signal and the internal logic level can be satisfactorily maintained regardless of the changes in the power supply voltages and the temperature changes.

REFERENCES:
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patent: 4707622 (1987-11-01), Takao et al.
patent: 4752701 (1988-06-01), Gonoi
patent: 4771194 (1988-09-01), Van Zeghbroeck
patent: 4931669 (1990-06-01), Highashisaka
patent: 5168180 (1992-12-01), Bayer et al.

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