Abstract: In a differential amplifier comprising a pair of transistors, these transistors comprise first and second MIS type field effect transistors with their gate electrode connected to a source through load resistors or MIS transistors, drain electrodes connected to input terminals respectively through serially connected capacitors and MIS type field effect transistors and source electrodes commonly connected to a source of constant current. One ends of the capacitors on the side of the input terminals are connected to the current source and the other ends of the capacitors are respectively connected to the drain electrodes of the pair of transistors through MIS transistors.

Abstract: A flip-flop usable as a sense amplifier having two insulated-gate field effect transistors that may have different threshold voltages and that have gates connected to nodes of the flip-flop, sources connected in common, and drains connected to the nodes through a first and a second control transistor rendered conductive by first clock pulses and crosswise to the gates of the other field effect transistors through a third and a fourth control transistor turned on by second clock pulses appearing in substantial coincidence with disappearance of the respective ones of the first clock pulses. Capacitive loads charged to a precharge voltage are connected to the respective nodes.