Semiconductor integrated circuit and semiconductor logic circuit used in the integrated circuit

Abstract

To speed up the operation of a decoder circuit, reduce the power consumption of the decoder circuit and increase the cycle, each circuit such as a buffer, a predecoder and a main decoder in the decoder circuit include a semiconductor logic circuit wherein the number of columns of transistors for pulling down an output node is small even if the number of inputs is large, and the true output signal and a complementary output signal having approximately the same delay time are acquired and the output pulse length of each circuit in the decoder circuit is reduced. By virtue of this arrangement, the operation of the decoder circuit can be sped up, the power consumption can be reduced, the cycles can be increased and, in a semiconductor memory, for example, the reduction of access time and power consumption and the increase of the cycles are enabled.