Abstract: A semiconductor device that includes a semiconductor substrate. First and second mode registers are provided on the semiconductor substrate and store information, respectively. First and second circuits are provided on the semiconductor substrate. The first and second circuits have substantially the same configuration. The first and second circuits perform an operation in response to the information of the first and second mode registers, respectively.

Abstract: A semiconductor device includes: two level shift circuits having substantially the same circuit configuration; an input circuit that supplies complementary input signals to the level shift circuits, respectively; and an output circuit that converts complementary output signals output from the level shift circuits into in-phase signals and then short-circuits the in-phase signals. According to the present invention, the two level shift circuits having substantially the same circuit configuration are used, and the complementary output signals output from the level shift circuits are converted into in-phase signals before short-circuited. This avoids almost any occurrence of a through current due to a difference in operating speed between the level shift circuits.