NCMOS - a high performance logic circuit

Details NCMOS - a high performance logic circuit NCMOS - a high performance logic circuit

1994-04-19

1995-06-20

Hudspeth, David R.

Electronic digital logic circuitry

Function of and, or, nand, nor, or not

Field-effect transistor

326 21, 326 57, 326 83, H03K 190944, H03K 1900

Patent

active

054263832

ABSTRACT:
A family of high performance logic circuits. Each circuit uses one or more NMOS transistors characterized by controlled threshold voltages. The threshold voltage is determined by changing the doping profile of the gate of that transistor. When each circuit is at its stable state, the current through its controlled-threshold NMOS transistor is limited by a characteristic leakage current of that transistor if its input signal is at a low logic level. The invention is demonstrated in an inverter, a ring-oscillator, an NAND circuit, an NOR circuit, and tri-state logic circuits.

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