Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-03-25
1992-01-14
Westin, Edward P.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307455, H03K 19086, H03K 190175
Patent
active
050813765
ABSTRACT:
According to this invention, a level converter has a pair of differential transistors operated at a negative voltage in accordance with an ECL-level input signal, and first and second output nodes are arranged between a collector of one transistor of the pair of differential transistors and a positive power source voltage. A level-converting resistor for converting an ECL-level signal to a positive level signal is inserted between the first output node and the second output node so as to output the positive level signal in accordance with an ECL-level input signal to the first output node. The emitter-collector path of a bipolar transistor is inserted between the second output node and the positive power source voltage. A clamp potential for controlling saturation of transistors constituting a TTL circuit connected to an output of the transistor is generated by a constant potential applied to the base of the transistor.
REFERENCES:
patent: 4536665 (1985-08-01), Dayton
patent: 4835455 (1989-05-01), Coddington et al.
patent: 4870301 (1989-09-01), Petty
patent: 4883990 (1989-11-01), Umeki
patent: 4996452 (1991-02-01), Yee et al.
Nitta Shozo
Sugimoto Yasuhiro
Kabushiki Kaisha Toshiba
Sanders Andrew
Westin Edward P.
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