Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Patent
1998-01-23
1999-06-15
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
327112, 327376, 327437, H03L 500
Patent
active
059125772
ABSTRACT:
A level shift circuit for receiving an input signal with a first level and a second level that is lower than the first level, and supplying an output signal with a third level and a fourth level, the third level being equal to or higher than the first level, the fourth level being equal to or lower than the second level comprises a high level power supply for supplying a voltage with the third level, a low level power supply for supplying a voltage with the fourth level, an inverter circuit whose input terminal is connected to a supply line of the input signal, a first transistor for connecting an output node thereof to the high level power supply when the output level of the inverter circuit substantially becomes the second level or below, a second transistor for connecting an output node thereof to the low level power supply when the output level of the inverter circuit substantially becomes the first level or above, a third transistor for causing the first transistor to be kept in an non-conductive state when the level of the output node substantially becomes the second level or below, a fourth transistor for causing the second transistor to be kept in an non-conductive state when the level of the output node substantially becomes the first level or above, a fifth transistor connected between the third transistor and the high level power supply, and a sixth transistor connected between the fourth transistor and the low level power supply.
REFERENCES:
patent: 5266848 (1993-11-01), Nakagome et al.
patent: 5650742 (1997-07-01), Hirano
patent: 5729165 (1998-03-01), Lou et al.
patent: 5789942 (1998-08-01), Mizuno
Kananen Ronald P.
Nguyen Hai L.
Sony Corporation
Wells Kenneth B.
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