Electronic digital logic circuitry – Function of and – or – nand – nor – or not – Bipolar transistor
Patent
1994-06-28
1995-12-05
Westin, Edward P.
Electronic digital logic circuitry
Function of and, or, nand, nor, or not
Bipolar transistor
326124, H03K 1920
Patent
active
054732727
ABSTRACT:
A digital switching stage includes a differential amplifier having a first and a second differential amplifier branch. A first resistor is connected in the first differential amplifier branch and has a first terminal and a second terminal. The first terminal is a terminal for a first supply potential. A first bipolar transistor is connected in an emitter follower circuit with respect to the second terminal of the first resistor and has an emitter being connected to an output terminal. A second bipolar transistor has a base and has a collector-to-emitter path being connected between the output terminal and a terminal for a second supply potential. A second resistor is connected in the second differential amplifier branch and has a first terminal and a second terminal. The first terminal of the second resistor is connected to the output terminal and the second terminal of the second resistor is connected to the base of the second bipolar transistor.
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Hoelzle Josef
Wilhelm Wilhelm
Greenberg Laurence A.
Lerner Herbert L.
Sanders Andrew
Siemens Aktiengesellschaft
Westin Edward P.
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