Patent ID: 8093935
Filing Date: 2012-01-10
Classification: H03K

Abstract:
1. A logic circuit, comprising: a first switching device having two different stable resistivity values for each applied voltage value that is greater than a prescribed first threshold voltage, and is smaller than a prescribed second threshold voltage that is larger than the prescribed first threshold voltage, which when a voltage less than or equal to the prescribed first threshold voltage is applied thereto, becomes in a first state having the higher resistivity value of the two different stable resistivity values, and when a voltage more than or equal to the prescribed second threshold voltage is applied thereto, becomes in a second state having the lower resistivity value of the two different stable resistivity values, the first switching device having two terminals; a second switching device having the same electric characteristics as the first switching device, the second switching device having two terminals and being connected in series therewith in a direction with uniform polarity to the first switching device, to form a series circuit with first and second ends; a bias terminal for applying a prescribed bias voltage to both the first and second ends of the series circuit; a first pulse input terminal for applying a first pulse of a first prescribed voltage to the first end of the series circuit; a second pulse input terminal for applying a second pulse of a second prescribed voltage to a connection between the first and second switching devices; a third pulse input terminal for applying a third pulse of a third prescribed voltage to the second end of the series circuit, the respective first and second states being selectively generated in the first and second switching devices by a combination of inputs of the first, second and third pulses; and an output terminal for outputting an output voltage according to the respective first and second states in the first and second switching devices, wherein each of the first and second switching devices includes: