BiCMOS logic circuit with additional drive to the pull-down bipo

Details BiCMOS logic circuit with additional drive to the pull-down bipo BiCMOS logic circuit with additional drive to the pull-down bipo

1987-09-11

1988-10-18

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307451, 307548, 307270, 307570, H03K 1704

Patent

active

047790148

ABSTRACT:
A logic circuit comprises at least one signal input terminal, an output terminal, an output circuit including a first bipolar transistor coupled between the output terminal and a reference potential terminal, to discharge the output terminal, and an MOS type logic circuit for supplying to the base of the first bipolar transistor a signal of a level corresponding to an input signal supplied to the at least one signal input terminal. The logic circuit further comprises a control MOS transistor coupled between a power source terminal and the base of the bipolar transistor, for supplying part of the base current to the bipolar transistor in response to a signal at the output terminal.

REFERENCES:
patent: 3699355 (1972-10-01), Madrazo et al.
patent: 4661723 (1987-04-01), Masuda et al.
patent: 4678943 (1987-07-01), Uragami et al.
patent: 4687954 (1987-08-01), Yasuda et al.
patent: 4716310 (1987-12-01), Tanizawa et al.
patent: 4733110 (1988-03-01), Hara et al.

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