The protection circuit of data line interface

The protection circuit of data line interface

CN
  • CN 207,353,839 U
  • Filed: 10/25/2017
  • Issued: 05/11/2018
  • Est. Priority Date: 10/25/2017
  • Status: Active Grant
First Claim
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1. A kind of 1. protection circuit of data line interface, it is characterised in that:

  • The protection circuit includes being used to connect data cable to connectReceive voltage and connecting pin, control chip, field-effect tube and the inserted terminal for grafting electronic equipment of data, the connecting pin bagPower supply terminal and ground terminal are included, the power supply terminal connects the control chip by first resistor, and the control chip connectsThe grid of the field-effect tube is connect, the source electrode of the field-effect tube connects the power supply terminal, and the drain electrode of the field-effect tube connectsInserted terminal is connect, the power supply terminal connects the ground terminal by Transient Suppression Diode.

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