| 摘要 |
PURPOSE:To prevent a bit of information of a flip-flop from being broken down due to an incidence of alpha rays without adding a capacity to a collector node, and to operate the titled circuit at high speed by using in the reverse direction a transistor whose collector is connected to the fetching point of a signal for the feedback of the flip-flop. CONSTITUTION:Among transistors for constituting a flip-flop, a reverse direction transistor is used for Q1, Q2, Q3 and Q4. Their collectors (usual emitters) are connected to the fetching point 11 of a feedback signal, and accordingly, even if a noise charge is collected in n<+>BL (emitters) of these transistors, its influence does not appear in the feedback signal, therefore, the inversion of information is not generated. Also, when the transistor of a side wall base electrode structure as shown in the figure is used as the transistor, an excellent reverse direction characteristic is obtained, therefore, the increase of a delay time can be prevented. |
