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PCA9519 4通道I2C-bus SMBus 中继器

  • 资源大小:227 K
  • 上传时间: 2013-11-23
  • 上传用户:1169578162
  • 资源积分:2 下载积分
  • 标      签: C-bus SMBus 9519 PCA

资 源 简 介

PCA9519 是一个4 通道的I2C 总线/SMBus 中继器,可以实现将低电压两线串行总线接
口的处理器与标准的I2C 总线或SMBus I/O 相连。该中继器在电平转换中保持I2C 总线系统所有的模式和特点的同时,允许通过给数据总线(SDA)和时钟总线(SCK)提供双向缓冲区来扩展I2C 总线,从而使I2C 总线或SMBus 在高电压下最大容限电容为400PF。SDA 和SCL 引脚具有耐压保护功能,当PCA9519 掉电时,均呈现出高阻抗特性。

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