Logic circuit in which improvement is made about a transition sp

Details Logic circuit in which improvement is made about a transition sp Logic circuit in which improvement is made about a transition sp

1994-02-25

1995-07-18

Westin, Edward P.

Electronic digital logic circuitry

Accelerating switching

Bipolar transistor

326 84, 327170, H03K 1908, H03K 1901

Patent

active

054345154

ABSTRACT:
For increasing an operation speed of a logic circuit in a case where an output level is shifted from a high level to a low level, a control circuit is made of a combination of a first control transistor and a second control transistor. An input circuit has a local terminal and produces a local signal in response to an input signal to supply the local signal to the local terminal. An output circuit has an output terminal and produces an output signal in response to the input and the local signals to supply the output signal to the output terminal. The first control transistor is connected between the local terminal and the second control transistor and has a first transistor control terminal which is supplied with the output signal for controlling operation of the first control transistor. The second control transistor is connected between the first control transistor and the ground and has a second transistor control terminal which is connected to the input terminal for controlling operation of the second control transistor.

REFERENCES:
patent: 4425516 (1984-01-01), Wanlass
patent: 4791320 (1988-12-01), Kawata et al.
patent: 5059821 (1991-10-01), Murabayashi et al.
patent: 5079447 (1992-01-01), Lien et al.

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