Tristate phase inverter based on FinFET device

Abstract

The invention discloses a tristate phase inverter based on a FinFET device. The tristate phase inverter comprises the first N-type FinFET tube, a second N-type FinFET tube, the first P-type FinFET tube and the second P-type FinFET tube, wherein the first P-type FinFET tube is the high-threshold P-type FinFET tube, the first N-type FinFET tube is the high-threshold N-type FinFET tube; the second P-type FinFET tube is the low-threshold P-type FinFET tube, and the second N-type FinFET tube is the low-threshold N-type FinFET tube; the advantage is that the functions of two P-type FinFET tubes of a phase-reversing tube and an enabling tube are realized through the first P-type FinFET tube, the first N-type FinFET tube further realizes the effect of integrating the joint control of the input end and the enabling end; the functions of two N-type FinFET tubes of the phase-revering tube and the enabling tube are realized through the first N-type FinFET tube, and the circuit area, the time delay, the power consumption, and the power delay product are greatly optimized.

Description

technical field [0001] The invention relates to a three-state inverter, in particular to a three-state inverter based on a FinFET device. Background technique [0002] As the process size enters the nanometer level, power consumption has become a problem that IC designers have to pay attention to. Many new products that process electronic information, including microprocessors, memories, and data buses in digital signal processors and portable electronic information devices, not only require input / output (I / O) for isolation, buffering, or a certain logic function. ) Terminal tri-state buffer / driver or tri-state logic gate circuit, and the tri-state gate circuit is required to have low power supply voltage level, fast, low power consumption and high integration performance. [0003] A three-state inverter is a widely used three-state gate circuit. The circuit of the traditional three-state inverter (that is, the classic three-state inverter in the BSIMIMG process library) i...

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Problems solved by technology

The circuit of the traditional three-state inverter (that is, the classic three-state inverter in the BSIMIMG process library) is as follows: figure 1 As shown, the tri-state inverter is composed of three NMOS transistors and three PMOS transistors. Due to the sharp increase of leakage current below the 45nm technology node, the leakage power consumption continues to increase, resulting in unbearable excessive power consumption; The area occupied by the three-state inverter connected to the bus has not been improved, especially after the emergence of a large number of portable devices such as mobile phones, PDAs and notebook computers, the requirements for small area and low power consumption are more urgent

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