Patent ID: 6107832
Filing Date: 2000-08-22
Classification: H03K

Abstract:
An input/output circuit comprising:a signal level converting circuit for converting a signal at a first potential to a signal at a second potential and outputting a first signal at the second potential or a ground potential and a second signal at the second potential or the ground potential;an inverter for receiving the second signal;a NAND gate for receiving the first signal and an output signal from said inverter;a NOR gate for receiving the first signal and the second signal;a first output element receiving a signal output from said NAND gate, outputting a signal at a third potential when a signal at the ground potential is received, and entering a high impedance state when a signal at the second potential is received; anda second output element receiving a signal output from said NOR gate, outputting a signal at a fourth potential when a signal at the second potential is received, and entering a high impedance state when a signal at the ground potential is received.