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嗨,大家好,我用74HC164来驱动器的一些LED。 PIC24FJ96GA010时钟脉冲,我的问题是其顺利工作,当我给功率到74HC164通过我的PIC开发LV24 - 33(3.3V),但如果尝试给7805和时钟脉冲从LV24 - 33(3.3V),5V越来越热:哭:任何人都可以有这种想法左右?帮助我,请感谢
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