초록 ▼

An input circuit of an input-output device has a waveform shaping function to relieve waveform distortion at an input-output line so that the upper bound of an operating frequency is enhanced while keeping sufficiently high and low signal levels. A signal waveform given to the input-output line is s

An input circuit of an input-output device has a waveform shaping function to relieve waveform distortion at an input-output line so that the upper bound of an operating frequency is enhanced while keeping sufficiently high and low signal levels. A signal waveform given to the input-output line is shaped by an inverter and transmitted as an input signal to an internal circuit. When receiving a signal, the input circuit of the input-output device uses a feedforward operation on the signal applied to the input-output line so as to shape the signal present on the input-output line. A period for the feedforward operation is determined by the delay time of a delay element.

대표청구항 ▼

[ I claim:] [1.] An input circuit in which potentials present within first and second ranges correspond to first and second binary logics, respectively, comprising;(a) an input line on which an input potential is transmitted,(b) first driving means for forcibly putting said input potential in said s

[ I claim:] [1.] An input circuit in which potentials present within first and second ranges correspond to first and second binary logics, respectively, comprising;(a) an input line on which an input potential is transmitted,(b) first driving means for forcibly putting said input potential in said second range when a first driving control signal is activated, and(c) first driving control means for activating said first driving control signal for a constant period after a first transition in which said input potential is transferred from said first range to said second range.