High voltages detector circuit and integrated circuit using same

Details High voltages detector circuit and integrated circuit using same High voltages detector circuit and integrated circuit using same

1997-01-30

1998-08-18

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 80, H03K 5153

Patent

active

057962758

ABSTRACT:
The circuit, in accordance with the present invention is for detecting the presence at a signal input of a high voltage higher than a predetermined value and signaling it to a signal output through a logical type signal. The circuit comprises one or more first transistors of MOS type and of a predetermined conductivity type, each being diode-connected and having its body terminal connected to the source terminal, and having principal conduction paths connected in series for current conduction between a first node and a ground input. The circuit also includes two or more second transistors of the MOS type and of the same conductivity type, with each one being diode-connected and having its body terminal connected to the source terminal and having principal conduction paths connected in series for current conduction between the signal input and the first node. At least one first logical inverter of the CMOS type has its input connected to the first node and its output coupled to the signal output and is also connected for power supply to a power supply input and to the ground input.

REFERENCES:
patent: 5083045 (1992-01-01), Yim et al.
patent: 5118968 (1992-06-01), Douglas et al.
patent: 5208488 (1993-05-01), Takiba et al.
patent: 5278458 (1994-01-01), Holland et al.
patent: 5438550 (1995-08-01), Kim

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