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TCA9801: TCA9801DGKR用于IIC通信时,从机端回ACK的波形,有小方波

Part Number: TCA9801

Hi  Ti engineer,

TCA9801DGKR用于IIC通信时,从机端回ACK的波形,有小方波,如下图所示,这个小方波如何滤掉?