| 摘要 |
PURPOSE:To obtain a D type FF without malfunction even with the connection of multistage, by providing a transfer gate at the input and output side of an inverter having a feedback path. CONSTITUTION:When a control signal from a control terminal 22 is at H level, the 1st transfer gate 24 is conductive and the input signal is fed to an inverter 27. When the control signal is at L level, the gate 24 is nonconductive and the 2nd and 3rd transfer gates 25, 26 are conductive. Thus, the feedback path consisting of an inverter 28 and a gate 25 is conductive and the input signal is stored. Simultaneously, new data are transferred to an inverter 29 via a gate 26. Thus, since this circuit has the same function as a master slave FF, no malfunction produces even with multistage connection. |
