| 摘要 |
PURPOSE:To bring one of output terminals under switching control without increasing the number of input terminals by latching an output switching signal inputted to one input terminal on time-division basis and by decoding the latch output. CONSTITUTION:Clock pulses are inputted to the clock terminals C of latching circuits 9, 10 and 11 at prescribed timing respectively and an output switching signal is inputted to each input terminal D from a terminal 4, so that the output terminals Q of the circuits 9, 10 and 11 are set to levels L, H and L respectively. Therefore, signals with the levels L, H and L are inputted to the input terminals 13a-13c of a decoding circuit 12, so one of output terminals 14a-14h is selected. Thus, (n) latching circuits are provided to select one of M output terminals, which meets M<=2<n>, by one input terminal. |
