The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.

接收器输入具有失效保护特性，当输入开路时，可确保逻辑高电平输出。

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The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit.

接收器输入具有失效保护特性，当输入开路时，可确保逻辑高电平输出。

youdao