Multi-value numerical discriminant circuit, multi-value OR logic discriminant circuit based on the principle of fuse algebra, and multi-level AND logic discriminant circuit based on the principle of fuse algebra

摘要

PROBLEM TO BE SOLVED: To provide a circuit for distinguishing a numerical value for multi values, using no resistor between input and output terminals, capable of being configured only by FETs performing a switching operation, and capable of being used also for a multivalued logic circuit.SOLUTION: In a circuit for distinguishing a numerical value for multi values, one two-valued CMOS NOT circuit is provided between a power line Vm+1 and a power line Vm and between the power line Vm and a power line Vm-1, and both input terminals thereof are connected to be an input terminal Tin. A part between a gate and a source of a normally off NMOS 96 is connected between both of the output terminals, the NMOS 96 having a threshold voltage Vth 96 that has an absolute value of less than a voltage between a power source potential Vm+1 and a power source potential Vm-1 and more than a voltage between the power source potential Vm+1 and a power source potential Vm and a voltage between the power source potential Vm and the power source potential Vm-1, the drain terminal of the NMOS 96 is used as an output terminal Tout, and it is distinguished whether an input signal potential of the input terminal corresponds to an integer m.SELECTED DRAWING: Figure 1