MULTIPLE SIGNAL SWITCHING CIRCUIT, CURRENT SWITCHING CELL CIRCUIT, LATCH CIRCUIT, CURRENT ADDITION TYPE DAC, SEMICONDUCTOR INTEGRATED CIRCUIT, VIDEO DEVICE, AND COMMUNICATION DEVICE

摘要

Provided is a multiple signal switching circuit using four input signals (IN1 to IN4), wherein a 4-input latch circuit (3b) is disposed. The 4-input latch circuit (3b), when one of the four input signals (IN1 to IN4) is a logical "L" and the other three are a logical "H", comprises four NAND circuits (6''). The NAND circuits (6'') each have an output connected to one of the four input signals (IN1 to IN4) and inputs receiving the remaining three input signals other than the input signal connected to the output. Accordingly, even in a multiple signal switching circuit having three or more input signals, the timing error among the multiple signals to be outputted is effectively prevented.