Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1987-12-21
1989-03-14
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307455, 307356, 307448, 307559, 307563, 307608, H03K 3354, H03K 3295, H03K 508, H03K 5153
Patent
active
048126764
ABSTRACT:
A current mode logic circuit which is implemented with metal-semiconductor field effect transistors (MESFETs) has a triggering circuit which produces hysteresis in the output of the circuit. That is, the output switches abruptly after the input has almost completed a corresponding transition from one logical output to another in a manner characteristic of triggering circuits such as Schmidt triggers. A triggering voltage is generated in response to one of two complementary outputs by triggering transistors configured as a current switch. The triggering voltage delays switching of a logic switching circuit which produces the two outputs which are a logical or boolean function of the input or inputs. The MESFETs are implemented in gallium arsenide technologies and output is equal to the inverted input.
REFERENCES:
patent: 3596114 (1971-07-01), Maupin et al.
patent: 3622799 (1971-11-01), Marley
patent: 3671764 (1972-06-01), Davis
patent: 4443717 (1984-04-01), Hague
patent: 4677315 (1987-06-01), Blauschild et al.
patent: 4728821 (1988-03-01), Yang et al.
Melanson Ronald J.
Yang Ji L.
Bertelson David R.
Digital Equipment Corporation
Miller Stanley D.
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