Single pulse generation circuit and level conversion circuit

Abstract

The invention provides a single pulse generation circuit and a level conversion circuit. The single pulse generation circuit is applied to a level conversion circuit comprising a first signal input end, a second signal input end and two pull-down tubes, and comprises a port detection module, a bidirectional detection trigger module, a single pulse generation module and a power supply voltage module; the method comprises the following steps: detecting whether any one of a first signal input end and a second signal input end of a level conversion circuit is overturned from a high level to a lowlevel; after the falling edge is detected by the single pulse generation circuit,generating a high-level pulse signal to open a pull-down tube of the level conversion circuit, and increasing the falling edge speed of an output port, so that in the signal transmission process, the discharge delay on a parasitic capacitor is shortened, the problem of signal transmission distortion is avoided, and the signal integrity is improved.

Description

Technical field [0001] The present invention relates to the field of integrated circuit technology, in particular to a single pulse generating circuit and a level conversion circuit. Background technique [0002] Level conversion chips are one of the common chips in integrated circuits, which are widely used in systems such as data transmission, logic control, and digital-to-analog conversion. Its function is to transmit the logic level signal under the lower (or higher) voltage domain at one end to the higher (or lower) voltage domain at the other end, and to minimize the transmission delay during the transmission process while maintaining the signal Completeness. [0003] In order to reduce the delay of level conversion, it is usually necessary to add a fast pull-up tube at the output end. In order to reduce the power consumption caused by the continuous conduction of the pull-up tube, a single pulse generation module is usually used to control the turn-on and turn-off of the p...

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Problems solved by technology

[0005] In view of this, the present invention provides a single pulse generating circuit and a level conversion circuit to solve the problem that the port parasitic capacitance of the level conversion circuit in the prior art cannot be ignored during high-speed level conversion, the discharge speed is slow, and the transmission delay of the falling edge When the time is large, the signal transmission is easy to be distorted, and it cannot be applied to the application of high-speed level conversion.

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