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TXB0106波形

Other Parts Discussed in Thread: TXB0106

1.利用TXB0106进行电平转换,附件图片为设计原理框图

2.MCU端为3.3V系统,74HC595因板子兼容性问题需要采用5V,所以中间加TXB0106PWR这颗芯片进行电平转换

3. MCU-->TXB0106,和TXB0106-->MCU之间均没有加上拉电阻或其他器件,MCU进行SPI通信时速率约为1M

4.当我进行通信时,发现TXB0106芯片输入端(A)信号正常,但TXB0106芯片输出端(B)信号有衰减

这种现象有可能什么情况造成,这样设计是否合理。

谢谢