Electrostatic protection type interface circuit

Abstract

The invention discloses an electrostatic protection type interface circuit. The electrostatic protection type interface circuit comprises a MAX3223ECAP chip, an electrostatic protection circuit and a power supply. A capacitor C6, a capacitor C7, a collector of a triode T1, a collector of a triode T2 and a silicon controlled rectifier of the electrostatic protection circuit are all connected with a resistor R2, and the resistor R2 is connected to an input end T2IN of the MAX3223ECAP chip; an emitting electrode of the triode T2, an emitting electrode of a triode T3, a base electrode of the triode T3 and the SCR of the electrostatic protection circuit and an enabled end and a grounding end GND of the MAX3223ECAP chip are all grounded; an emitting electrode of the triode T1 and a collector of the triode T3 of the electrostatic protection circuit and a FORCE OFF end and a power supply VCC end of the MAX3223ECAP chip are all connected with the power supply. On the basis of the principle, a clock interface circuit is prevented from being affected by static, and normal communication of data is ensured.

Description

technical field [0001] The invention relates to a clock interface circuit, in particular to an electrostatic protection type interface circuit. Background technique [0002] The clock circuit is generally composed of a crystal oscillator, a crystal shock control chip and a capacitor. Clock circuits are widely used, such as clock circuits for computers, clock circuits for electronic watches, and clock circuits for MP3MP4. The clock circuit produces an oscillating circuit as accurate as a clock, keeping any work in chronological order. It is used to capture, filter and store FC network data. The FC network monitoring card for real-time display, data playback and data analysis also needs to use a clock circuit to realize emergency messages, periodic messages, event messages, large data block messages and Accurate collection and storage of network management messages. The FC network emulation card is used to simulate the network interface of the FC network terminal equipment,...

AI Technical Summary

Problems solved by technology

It can be seen that the normal operation of the FC network emulation card is of great significance, but the clock interface circuit on the FC network emulation card cannot achieve normal operation due to the influence of static electricity, resulting in abnormalities of the FC network emulation card and affecting the normal communication of data

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