High-speed level conversion circuit with acceleration selection function

Abstract

The invention relates to the technical field of circuit design, and discloses a high-speed level conversion circuit with an acceleration selection function, which comprises a voltage domain conversion circuit, a first voltage domain conversion circuit and a second voltage domain conversion circuit, when level conversion is carried out on the input signal of the first voltage domain, delayed closing or delayed conduction is carried out on the pull-up path and the pull-down path to obtain a first intermediate signal serving as a pull-up signal and a pull-down signal, and the first intermediate signal forms a first output signal through positive feedback crossover operation; the storage and logic judgment circuit is used for carrying out storage and logic combination on the first output signal to obtain a second intermediate signal and an output signal of a second voltage domain in the storage process; and the acceleration selection circuit is used for forming a final feedback signal according to the first intermediate signal and the second intermediate signal, acting the final feedback signal on the pull-up path and / or the pull-down path, and accelerating delayed closing or delayed conduction of the pull-up path and / or the pull-down path. According to the invention, low time delay of ascending and descending is realized.

Images