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ESD保护二极管

产品详情

主要特征

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数据资料 ESD保护二极管 Oct 21, 1999

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主要特征

  • Zener characteristic with voltage snap-back to protect against ESD hits
  • High avalanche voltage, low leakage and low capacitance avoid signal attenuation
  • Compatible to all 5V logic families
  • Space-saving, low-inductance TSOC surface-mount package
  • Symmetric dual-port bondout to maximize energy dissipation in protection device
  • Industrial temperature range

应用/用途

描述

This DS9502 is an ESD protection device for 1-Wire® interfaces. If used with circuits that already have strong ESD production at their I/O port, the ESD protection level is raised to more than 27kV (IEC 801-2 reference model). In case of abnormal ESD hits beyond its maximum ratings the DS9502 will eventually fail "short" thus preventing further damage.

During normal operation the DS9502 behaves like a regular 7.5V Zener diode. When the voltage exceeds the trigger voltage, the I/V characteristic of the device will "snapback" allowing the same or higher amount of current to flow, but at a significantly lower voltage. As long as a minimum current or voltage is maintained, the device will stay in the "snapback mode." If the voltage or the current falls below the holding voltage or holding current, the device will abruptly change to its normal mode and conduct only a small leakage current.

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DS9502:典型应用电路 DS9502:典型应用电路 Zoom icon

Technical Docs

数据资料 ESD保护二极管 Oct 21, 1999

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心