Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03K
PULSE TECHNIQUE
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3/00
Circuits for generating electric pulses; Monostable, bistable or multistable circuits
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H03K3/02
Generators characterised by the type of circuit or by the means used for producing pulses
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H03K3/26
by the use, as active elements, of bipolar transistors with internal or external positive feedback
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H03K3/28
using means other than a transformer for feedback
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H03K3/281
using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
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H03K3/29

Ternary digit logic circuit
10133550 · 2018-11-20 · ·

A ternary logic circuit according to the present invention includes a pull-up device (100) and a pull-down device (200) connected in series between power voltage sources (V.sub.DD and GND), and an input voltage (V.sub.IN) source and output voltage (V.sub.OUT) source. When both the pull-up device (100) and the pull-down device (200) are turned off by an input voltage (V.sub.IN), both the pull-up device (100) and the pull-down device (200) operate as simple resistors which are affected only by an output voltage (V.sub.OUT) and form a ternary digit (1 state) through voltage division. When only one of the pull-up device (100) or the pull-down device (200) is turned on to allow a current to flow therethrough, V.sub.DD (2 state) or GND (0 state) is output as the output voltage (V.sub.OUT). Accordingly, a bit density can be remarkably increased.