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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1173717/pca9306-q1-internal-esd-diodes-between-vref-and-data-lines
PCA9306-Q1的 Vref 和数据线路之间是否存在内部 ESD 二极管？
否 唯一的二极管位于所有引脚和 GND 之间。
