AND GATE DRIVE CIRCUIT

摘要

A "natural" threshold device is serially connected between the gate of an output depletion mode FET device and the input node to an FET device so as to provide current flow from the input node to the gate of the FET device as the input waveform begins to rise, and yet to provide sufficient resistance in the gate circuit of the depletion mode device so as to prevent backward flow of current from the gate as the potential of the output node rises. This increases the conductivity of the output load device, thereby providing a faster rise time for the output waveform.