Tristable multivibrator

Details Tristable multivibrator Tristable multivibrator

1989-05-03

1991-02-05

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307473, 307288, 377 98, 377121, 377114, H03K 3353, H03K 2100, H03K 2360, H03K 2364

Patent

active

049907964

ABSTRACT:
Disclosed is a circuit which provides the controlled generation of tri-level digital signals utilizing Field Effect Transistors (FETs), as active elements. The stability of all three states is due to a unique feed-back technique, and utilization of the gate threshold characteristics of FETs. This circuit is controllable with either bi-level or tri-level digital signals, and is externally configurable as: a ternary up counter, providing the count sequence of 0,1,2,0 . . . ; a ternary down counter, providing the count sequence of 2,1,0,2 . . . ; a ternary shift left/right register; or as a ternary memory.

REFERENCES:
patent: 3129340 (1964-04-01), Baskin
patent: 3283256 (1966-11-01), Hurowitz
patent: 3492496 (1970-01-01), Callan
patent: 3508033 (1970-04-01), Turecki
patent: 3671764 (1972-06-01), Maley et al.
patent: 4217502 (1980-08-01), Suzuki et al.
patent: 4302690 (1981-11-01), Gollinger et al.

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