Full and fractional swing with adjustable high level ECL gate us

Details Full and fractional swing with adjustable high level ECL gate us Full and fractional swing with adjustable high level ECL gate us

1984-06-29

1987-03-03

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, 307264, H03K 19013, H03K 19092, H03L 500

Patent

active

046477993

ABSTRACT:
An emitter coupled gate circuit for providing both a full output voltage swing and a fractional output voltage swing with an adjustable high level output voltage includes a single differential transistor circuit having a first current switch transistor and a second current switch transistor and a single constant-current source. A first load resistor has its one end connected operatively to the collector of the second current switch transistor. A second load resistor has its one end connected operatively to the collector of the second current switch transistor, and a level shifting resistor has its one end connected to the other end of the second load resistor. A first emitter follower transistor has its base connected to the one end of the first load resistor and its emitter connected to an upper-level full output voltage swing terminal. A second emitter follower transistor has its base connected to the one end of the second load resistor and its emitter connected to an upper-level fractional output voltage swing terminal. The upper-level fractional output voltage swing terminal has an adjustable high level output voltage which is controlled by the ratios of the resistance values of the level shifting resistor relative to the first load resistor and the second load resistor.

REFERENCES:
TTL Decoder for Bipolar Arrays, I.B.M. Tech. Disc. Bul., vol. 27, No. 2, Jul. 1984.

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