Patent ID: 7138833
Filing Date: 2006-11-21
Classification: H03K

Abstract:
1. A selector circuit that outputs a single signal from among a plurality of input signals, the selector circuit comprising: a plurality of conduction control circuits that controls conduction of the input signals; a logical operation circuit that receives output signals from each of the conduction control circuits via a plurality of signal paths, and performs a logical operation on each of the output signals to output the single signal; a signal-level setting circuit that sets, when the conduction of the input signals in the conduction control circuits connected to a same signal path is blocked, a signal level of the signal path; and a control-signal generating circuit that generates a first control signal that controls the conduction control circuits to select only one input signal for conduction, and a second control signal that controls the signal-level setting circuit to set the signal level of the signal path, by performing a logical operation on a same input signal.