Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-07-19
1987-04-28
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307473, 307443, 307254, H03K 19013, H03K 19088, H03K 1704, H03K 1760
Patent
active
046617272
ABSTRACT:
A multiple phase-splitter TTL tristate output circuit having a feedback diode coupled between the signal output and the collector of a first phase-splitter transistor to accelerate sinking of current from the output to low potential during transition of binary signals at the output from high to low potential. An independent base drive is coupled to the base of the first phase-splitter transistor independent from any base drive coupled to the other phase-splitter transistor or transistors. Current hogging of the base drive current to the first phase-splitter transistor by the other phase-splitter transistors is thereby prevented. The first phase-splitter transistor which is coupled in the feedback circuit with the accelerating feedback diode to the base of the pulldown transistor element can therefore maintain the high current sinking mode through the pulldown transistor element with gain step-up proportional to .beta..sup.2 when the output is at the high voltage level.
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patent: 4255670 (1981-03-01), Griffith
patent: 4287433 (1981-09-01), Goodspeed
patent: 4321490 (1982-03-01), Bechdolt
patent: 4355246 (1982-10-01), Usui
patent: 4467223 (1984-08-01), Neely
patent: 4481430 (1984-11-01), Houk et al.
patent: 4562364 (1985-12-01), Tanizawa
Caswell Richard J.
Ferris David A.
Bertelson David R.
Carroll David H.
Fairchild Semiconductor Corporation
Kane, Jr. Daniel H.
Miller Stanley D.
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