| 摘要 |
PURPOSE:To improve the degree of integration of a semiconductor integrated circuit by reducing the number of circuit components. CONSTITUTION:An input A is imparted to an input terminal of a CMIS inverter 20 comprising a PMIS transistor(TR) TP1 and an NMIS TR TN1, gates of an NMIS TR TN2 and a PMIS TR TP2 are connected in common and an input B is fed to the connecting point. Then an input terminal and an output terminal of the CMIS inverter 20 are connected in common respectively via the PMIS TR TP2 and the NMIS TR TN2 and an output X is extracted from the connecting point. With the input B set to a level, the TN2 is turned on and the TP2 is turned off, the output X is equal to the inverted input A by the CMIS inverter 20 and when the input B is set to 0, the TN2 is turned off and the TP2 is turned on and the output X equal to the input A. Thus, the output X is exclusive OR of the inputs A, B. |
