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https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1232104/iso1044-canh-canl-input-signals-prior-to-vcc2-supply
您好
我想问一下收发器侧电源 VCC2和 CANH/CANL 信号之间的关系。
如果 CANH/CANL 信号是在 VCC2之前输入的、这是否会导致器件故障等问题？
此致、
邦宏
您好，邦广 ISO1044数据表包含涵盖此场景的"8.3.3.5未上电器件"和"8.3.3.3欠压锁定和默认状态"章节。 如果 CANH/CANL 信号是在 VCC2之前输入的、那么器件将不会出现故障。 总线将处于高阻抗状态。
谢谢
维克斯·J
