Buffer circuit having switch circuit capable of outputing...

Details Buffer circuit having switch circuit capable of outputing... Buffer circuit having switch circuit capable of outputing...

2011-08-30

2011-08-30

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000, C326S087000

Reexamination Certificate

active

08008952

ABSTRACT:
A buffer circuit outputs a low voltage and high voltages as opposed logic signals and a first high voltage and a second high voltage that is higher than the first high voltage as the high voltages. The buffer includes a logic control circuit, a first MOS transistor provided between a power supply for feeding the first high voltage and an output terminal, the first MOS transistor including a gate receiving a control signal of the first high voltage level outputted from the logic control circuit, and a backgate receiving the first high voltage, a second MOS transistor provided between a power supply for feeding the second high voltage and the output terminal, the second MOS transistor including a gate receiving a control signal of the second high voltage level outputted from the logic control circuit, and a backgate receiving the second high voltage, and a first switch circuit provided between the first MOS transistor and the output terminal and controlled ON/OFF state thereof by the control signal of the second high voltage level.

REFERENCES:
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patent: 4731553 (1988-03-01), Van Lehn et al.
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patent: 5914618 (1999-06-01), Mattos
patent: 6265892 (2001-07-01), Jou et al.
patent: 7009537 (2006-03-01), Kabune
patent: 7583105 (2009-09-01), Stopel et al.
patent: 2005/0160334 (2005-07-01), Kabune
patent: 3-185923 (1991-08-01), None
patent: 3861874 (2006-10-01), None

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