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CH423S Datasheet(PDF) 8 Page - Jiangsu Haoheng Co., Ltd.

Part No. CH423S
Description  2-line Remote I/O extension chip
Download  9 Pages
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Manufacturer  WCH [Jiangsu Haoheng Co., Ltd.]
Direct Link  http://wch.cn/
Logo WCH - Jiangsu Haoheng Co., Ltd.

CH423S Datasheet(HTML) 8 Page - Jiangsu Haoheng Co., Ltd.

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CH423 中文手册
８
外 8 个通用输出引脚仍然可以用于通用输出。
由于 CH423 内部可以对段驱动电流进行限制，所以段引脚所串联的限流电阻 R1～R8 可以省掉。
8.3. 数字电位器（下图）
CH423 的 OC 引脚在开漏输出方式下是低阻开漏输出，导通电阻小于 10 欧姆，可以用作一端接地


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