Original question:
[参考译文] SN74LVC1G17：用作 SDI-12电压电平转换器的 SN74AHCT1G125 + SN74LVC1G17
Hi,
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Is the intention of the design to be choosing between SDI_TX and SDI_RX?
I believe the bottom device (AHCT1G126) is connected wrong. SDI_RX is going into pin 4 (output Y). You should flip Pin 2 and Pin 4 connections.
