公开(公告)号：US5198704A

公开(公告)日：1993-03-30

申请号：US688511

申请日：1991-07-30

申请人： Yoshinori Nitta ,  Takeshi Sugoh ,  Hiroyuki Hara

发明人： Yoshinori Nitta ,  Takeshi Sugoh ,  Hiroyuki Hara

IPC分类号： H03K17/567 ,  H03K19/00 ,  H03K19/003 ,  H03K19/08 ,  H03K19/0944

CPC分类号： H03K19/09448 ,  H03K19/001 ,  H03K19/00353

摘要： In a Bi-CMOS output circuit constituted by combining a bipolar transistor and a CMOS circuit, in an output circuit obtained by connecting current paths of two bipolar transistors in series between a power source and ground, when the bipolar transistor connected to ground is driven by a bipolar transistor, an output current value can be assured when an output voltage is low. However, when the output voltage is high, a large current is supplied to the bipolar transistor to vary a power source voltage. Therefore, the output terminal of the MOS transistor is connected through a resistor to the grounded control signal input terminal of the bipolar transistor. Since the bipolar transistor connected to the ground is driven by a MOS transistor having drivability lower than that of a normal bipolar transistor, when the output voltage is low, a predetermined current can be assured. When the output voltage is high, supply of a large current can be prevented.

摘要翻译： PCT No.PCT / JP90 / 01277 Sec。 371日期1991年7月30日 102（e）日1991年7月30日PCT 1990年10月3日提交。在通过组合双极晶体管和CMOS电路构成的Bi-CMOS输出电路中，在通过将两个双极晶体管的电流路径 串联在电源和地之间，当连接到地的双极晶体管由双极晶体管驱动时，输出电压低时可以确保输出电流值。 然而，当输出电压高时，向双极晶体管提供大电流以改变电源电压。 因此，MOS晶体管的输出端子通过电阻器连接到双极晶体管的接地控制信号输入端。 由于连接到地的双极晶体管由具有低于正常双极晶体管的驱动能力的MOS晶体管驱动，所以当输出电压低时，可以确保预定的电流。 当输出电压高时，可以防止大电流的供给。