Multiple-valued literal circuit using resonant tunneling diodes

Details Multiple-valued literal circuit using resonant tunneling diodes Multiple-valued literal circuit using resonant tunneling diodes

1996-05-20

1998-02-03

Santamauro, Jon

Electronic digital logic circuitry

Three or more active levels

326134, 327499, H03K 1910

Patent

active

057148910

ABSTRACT:
A multiple-valued literal circuit is implemented with resonant tunneling diodes (RTD). A number of RTD sections are connected in series with a current source. Current is tapped by a current bleeder between every two adjacent RTD sections. The current bleeders are turned on at different levels of input voltage, which is applied at the joint between the current source and the RTD sections. When the voltage reaches a certain threshold level, the current bleeder with the highest threshold voltage is turned on and taps the most current from the current source, depleting the current from other current bleeders with lower threshold voltages. Thus only one dominant current is tapped from the current source. The literal circuit can be used for multiple-valued decoders, multiplexers, demultiplexers and other multiple-valued digital systems.

REFERENCES:
patent: 5017817 (1991-05-01), Yamakawa
patent: 5128894 (1992-07-01), Lin
patent: 5247298 (1993-09-01), Wei et al.
patent: 5280445 (1994-01-01), Shieh et al.
patent: 5563530 (1996-10-01), Frazier

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