Semiconductor integrated circuit device

摘要

The purpose of the invention is providing a semiconductor circuit being able to supply either "L" level signal or "H" level signal to the subsequent stage logic circuit thereof. The latch circuit 30 is placed between the output side of the analog circuit 10 and the input side of the logic circuit 20 and said latch circuit 30 is controlled by the power-down signal PD. And said power-down signal PD is changed to "H" level to set said analog circuit 10 into said operational mode and output the signal S 10 having the requested logic level. While said signal S 10 having the requested logic level is outputted, said power-down signal PD is changed to level "L". Subsequently, the operation of said analog circuit 10 is halted and the signal S 10 is stayed at level "L", then the signal S 10 of the analog circuit 10 being outputted shortly before the power-down signal PD becomes level "L"; is held by the latch circuit 30 and is provided to said logic circuit 20 as the signal 30.