Electronic digital logic circuitry – Function of and – or – nand – nor – or not – Bipolar transistor
Patent
1996-11-29
1998-08-04
Westin, Edward P.
Electronic digital logic circuitry
Function of and, or, nand, nor, or not
Bipolar transistor
326 91, H03K 19086
Patent
active
057899460
ABSTRACT:
An active pull-down emitter coupled logic circuit includes a high voltage line, a low voltage line, a first constant current circuit coupled to the low voltage line, first and second main current paths extending between the high voltage line and the first constant current circuit, and first and second subordinate current paths extending between the high voltage line and the first constant current circuit. The subordinate current paths are paired with their respective ones of the main current paths.
REFERENCES:
patent: 5506512 (1996-04-01), Collins
patent: 5572152 (1996-11-01), Ueda
patent: 5717347 (1998-02-01), Dufour
Le Don Phu
NEC Corporation
Westin Edward P.
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