Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1978-05-11
1980-04-29
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307303, H03K 2308
Patent
active
042008115
ABSTRACT:
A relatively high speed, high density integrated circuit for dividing the frequency of an alternating signal includes first and second semiconductor boats formed on a substrate. The first boat includes a plurality of transistors having the semiconductor material of the boat as a common emitter region. The second boat includes a plurality of transistors having the semiconductor material of the boat as a common collector region. Pairs of transistors of the first boat and pairs of transistors of the second boat are coupled together in cross coupled configurations to form flip-flop stages. Complementary clock signals derived from the alternating signal are coupled to alternate stages. In each stage, the pair of transistors of the second boat are arranged as emitter followers to bias the pair of transistors in the first boat so that only one transistor of the pair is conductive at a time independent of the associated clock signal level. A resistor coupled between the common emitter region of the first boat and a source of operating potential limits the current flowing through conductive transistors of the first boat below their saturation current. Pairs of transistors in the second boat, also arranged as emitter followers, couple signals representing the conduction states of one stage to the next stage in response to a predetermined level of the clock signals to control the conduction states of the next stage.
REFERENCES:
patent: 3655999 (1972-04-01), Wiedman
patent: 3728561 (1973-04-01), Brocker
patent: 3818251 (1974-06-01), Hoehn
patent: 3996478 (1976-12-01), Kasperkovitz
"The Bipolar LSI Breakthrough", by Wiedman appearing in Electronics Part 1, pp. 89-95, 9-4-75 & Part 2, pp. 99-103, 10-2-75.
Balaban Alvin R.
Steckler Steven A.
Emanuel Peter M.
Heyman John S.
Limberg Allen LeRoy
Rasmussen Paul J.
RCA Corporation
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