Digital IO circuit

Abstract

The invention belongs to the field of integrated circuits, and in particular relates to a digital IO circuit. The digital IO circuit comprises a dynamic circuit unit, an input buffering control unit and a Schmidt circuit unit which are connected in sequence. According to the digital IO circuit, the transformation process of an input signal is sped up through the dynamic circuit unit, the transformation time of the circuit from 0 to 1 is reduced, the time of the circuit in an uncertain state is also reduced, and therefore, the power consumption is decreased; the Schmidt circuit unit is used, which is able to control the switching thread of the input signal from the low level to the high level and from the high level to the low level, and thus the slope of a circuit signal can be raised, the signal conversion process and the signal slope of the circuit are improved, and as a result, the output slope of the output waveform is raised; moreover, the input buffering control unit is used for controlling the circuit input signal to be connected or cut off, and therefore, the accuracy of the whole circuit signal is ensured.

Description

technical field [0001] The invention belongs to the field of integrated circuits, in particular to a digital IO circuit. Background technique [0002] With the advancement and development of science and technology, the development of integrated circuits continues to verify Moore's Law. The size of integrated circuit devices continues to shrink, the operating voltage of circuits continues to decrease, and the operating frequency of circuits is getting higher and higher. The frequency and the normal operation of the chip play a very important role. Therefore, it is necessary to design a circuit that improves the performance of digital IO input signals. [0003] For digital IO circuits, the characteristics of the digital signal propagated mainly include: the transmission characteristics of the signal ("0" or "1"), the slope of the waveform, and the frequency of the signal. Therefore, the design of the IO circuit mainly focuses on the characteristics of the signal and the slop...

AI Technical Summary

Problems solved by technology

In this way, the switching threshold voltage of the Schmidt circuit is different for the signal in different directions, and a slow-changing input waveform signal is changed into a rapidly flipping signal. However, for the voltage in the signal that is in an indeterminate state area, the circuit has no effect on this part, therefore, for signals in an unsteady state, this circuit has no effect on improving the signal

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