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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1191309/tca9555-confirmation-of-int-pin-pull-up-when-power-is-not-supplied-to-vcc
我想、由于 INT 引脚是一个开漏引脚、如果在未向 Vcc 供电的情况下被另一个电源上拉、没有问题、这是正确的吗？
是；无论电源电压如何、绝对最大额定值都允许高达6V 的电压。
