Importance

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Abstract

This invention provide a new and improved output circuit of a semiconductor integrated circuit device that enables output of a slew-rate waveform with a desired gradient without generating unwanted delay and also enables reduction in switching noise. According to this invention, an output circuit of a semiconductor integrated circuit device for controlling the gradient of an output waveform of a CMOS output transistor using first and second variable resistance units (transfer gates) controlled by a signal of an input part has another CMOS output circuit for delaying rise of a gate by dividing an output part and connecting first and second resistance units (NMOS transistor and PMOS transistor) to the gates.

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First Claim