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ISO1540的VCC1供3.3V，VCC2供5V，这样供电芯片可以正常工作吧？
VCC1，VCC2 均可以工作在 3V~5.5V
手册有这个说明
你好，
这样没问题。
如果问题已经得到解答，请帮忙点击确认，谢谢
Best regards
Sulyn Zhang
是的，没有问题，均在正常范围内，两侧的Vih和Vil分别参考Vcc1和Vcc2。
