| 摘要 |
PROBLEM TO BE SOLVED: To provide a selector circuit capable of reducing power consumption without requiring any complicated circuit configuration. SOLUTION: A selector circuit 1A includes: a plurality of decoders 21, 22A to which a plurality of divided encoded selection signals are inputted, respectively, and from which a set of decoder output signals obtained by decoding the inputted divided encoded selection signals are outputted, respectively, in the set of decoder output signals, any one signal becoming a signal level different from the other output signals; and a plurality of selector unit circuits 31A, 32 wherein a plurality of stages of selector unit circuits each for selecting and outputting one of a plurality of input signals are configured. The plurality of stages are corresponding to the plurality of decoders, respectively. The operation of a selector unit circuit corresponding to the input signal, which is not selected by a reference stage of selector unit circuit 32 posterior to a stopped stage among all the selector unit circuits 31A on the stopped stage, is stopped in accordance with a set of decoder output signals SA-SD outputted from the decoder 21 corresponding to the reference stage of selector unit circuit 32. COPYRIGHT: (C)2011,JPO&INPIT
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