Patent ID: 6239640
Filing Date: 2001-05-29
Classification: H03K

Abstract:
A double edge trigger flip-flop, comprisingat least two inputs and at least three latches, wherein a first input and a second input are respectively coupled to a first tri-state inverter controlled by a clock control signal and a second tri-state inverter controlled by an inverted clock control signal, outputs of the first tri-state inverter and the second tri-state inverter are respectively coupled to a first latch and a second latch, outputs of the first latch and the second latch are respectively coupled to a third tri-state inverter controlled by the clock control signal and a fourth tri-state inverter controlled by the inverted clock control signal, outputs of the third tri-state inverter and the fourth tri-state inverter are respectively coupled to a first input and a second input of a third latch, a first output and a second output of the third latch are respectively an output and inverted output of the double edge trigger flip-flop.