Provided is a semiconductor device capable of reducing a penalty associated with ensuring reliability. The semiconductor device includes a latch circuit which has input/output paths of three systems or more independent from each other. The latch circuit includes a plurality of storage elements STE1 to STE3 which are provided on the input/output paths of the three systems or more, respectively, and hold input data in synchronization with a clock signal. At least one storage element (for example, STE1) of the plurality of storage elements STE1 to STE3 includes a majority decision unit (for example, 81a) executing a majority decision using data from the storage elements provided on other input/output paths different from the input/output path thereof and outputs data in which a result of the majority decision is reflected.