Enhanced differential current switch level shifting circuit.

摘要

A level shifting circuit operating a low power with minimal signal delays. The circuit employs high capacitance diodes to shift signals from a first signal level to a second higher or lower signal level. The capacitance is obtained by either providing a discrete capacitor shunt across the diode or by using diode connected transistors. Diode connected transistors are biased to provide the necessary capacitance. A pair of high capacitance diode level shifters is used as a differential pair level shifter by connecting the reference resistors to a common reference potential. <IMAGE>