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BUF634: 输出始终1.3v

G L
Prodigy 30 points

Part Number: BUF634

dde83a57-582d-4ce6-b44e-e116307230ca.png

 

按照此图设计在输入0v的情况下，BUF634AIDDAR输出端一直有1.3v，看手册是G=1，这个电压值怎么来的，单电源5v供电