Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1982-09-27
1985-12-31
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307443, 307456, 307360, H03K 19088, H03K 1716
Patent
active
045623643
ABSTRACT:
A TTL circuit comprising an inverted signal output transistor (Tr.sub.4) and an off buffer circuit (Tr.sub.2, Tr.sub.3), alternately turned on and off in response to an input signal, to provide an inverted output. According to the invention, two driving circuits for driving the inverted signal output transistor and the off buffer circuit are separately provided. The threshold voltage of the circuit for driving the off buffer circuit is lower than the threshold voltage of the circuit for driving the inverted signal output transistor, whereby no transient current flows through the off buffer circuit and the inverted signal output transistor.
REFERENCES:
patent: 4092552 (1978-05-01), Hoehn
patent: 4132906 (1979-01-01), Allen
patent: 4228371 (1980-10-01), Mazgy
patent: 4413194 (1983-11-01), Birch
IBM Technical Disclosure Bulletin, "T.sup.2 L Compatible Push-Pull Drivers", Chin, vol. 14, No. 8, Jan. 1972, p. 2289.
IBM Technical Disclosure Bulletin, "Schottky Clamp for Transistor Breakdown", Culican, et al., vol. 21, No. 4, Sep. 1978, pp. 1454-1455.
Fujitsu Limited
Heyman John S.
Hudspeth D.
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