Communication device performing communication using two clock signals complementary to each other

摘要

A receiver of a communication device includes: a differential amplification circuit; two capacitors for applying only the amplitude components of two input clock signals complementary to each other to the gates of two N-channel MOS transistors of the differential amplification circuit; and an initialization circuit for applying a predetermined reference potential to the gates of the two N-channel MOS transistors in a non data communication state. Thus, it is possible to make a quick and stable transition from a non data communication state to a data communication state.