Flipflop which is operable at high speed and adapted to implementation as an integrated circuit.

摘要

In a master latch circuit (11), first and second master resistors (36, 37) have their one ends connected to first and second master nodes (26, 27), respectively, and their other ends connected collectively to a power supply lead (16) through a common master resistor (86). As a slave input signal, one of signals latched at the master nodes as a master output signal is delivered to a slave latch circuit (12) for providing a slave output signal at one of first and second slave nodes (46, 47). Preferably, first, second as well as common master resistors have a resistance value which is equal to a half of a slave resistance value of each of slave resistors (56, 57). This forecuts slave transistors (41, 43) from being saturated and decrease the dynamic range of the master output signal thereby speeding up the switching of the flip-flop.