CMOS output circuit compensating for back-gate bias effects

Details CMOS output circuit compensating for back-gate bias effects CMOS output circuit compensating for back-gate bias effects

1994-06-23

1996-09-03

Westin, Edward P.

Electronic digital logic circuitry

Interface

Current driving

326119, 326 57, 327534, H03K 190944, H03K 190185

Patent

active

055527230

ABSTRACT:
An output circuit according to the present invention comprises an input terminal, first and second MOS transistors of a same conductivity type connected in series between first and second power supplies to form a current path, and alternately turned on in response to an input signal from the input terminal, an output terminal connected to a connection point of the current path of the first and second MOS transistors, and a switching element having a current path one end of which is connected to the output terminal and another end of which is connected to a back gate of the first MOS transistor, for performing a switching operation in response to the input signal from the input terminal, the switching element preventing a parasitic diode generated between the back gate of the first MOS transistor and the first power supply from turning on, and controlling a potential of the back gate of the first MOS transistor.

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