DRIVER CIRCUIT, RECEIVER CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce power consumption of a digital signal transmitting circuit. SOLUTION: A driver circuit 20 has a PFET 21, an NFET 23 and an NFET 22 of a low threshold voltage. An input signal DIN bar is applied to the gate of the PFET 21, and a reference potential Vref is applied to the gate of the NFET 22. The signal of a small amplitude limited by the Vref is outputted to a driver output DOUT. A receiver circuit 40 has a dynamic NAND circuit, composed of a PFET 41, NFET 42 and 43 of small threshold voltage and an inverter composed of a PFET 44 and a NOT gate 45. The signal of the small amplitude is level-shifted by the dynamic NAND circuit and driven by the inverters so that a signal ROUT of a CMOS level is outputted.