| 摘要 |
PROBLEM TO BE SOLVED: To overcome the problem with a conventional output buffer circuit, wherein there is possibility to generate a through current. SOLUTION: The output buffer circuit includes: a first transistor and a second transistor connected in series to output an output signal from a common node; a first driving circuit for driving the first transistor in a conducting or non-conducting state in accordance with an input signal and a first detection signal; a second driving circuit for driving the second transistor in a conducting or non-conducting state in accordance with the input signal and a second detection signal; and a detection circuit for detecting a voltage of the common node (LX) when the first transistor is changed from a conducting state to a non-conducting state in accordance with the input signal and the first detection signal and making the second transistor a conducting state from a non-conducting state by the second detection signal in accordance with the detection results. COPYRIGHT: (C)2011,JPO&INPIT
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