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SN74LV123APW不用通道引脚如何处理?



1. 只使用了1通道振荡器,2通道引脚如何处理?2通道的RD、B、A接地可以,CEXT和REXT/CEXT悬空可以?

2. CEXT接地时,脉冲宽度计算公式是tw = K × RT × CT 吗?1μF和100k时,K取1,宽度是0.1s,计算正确吗?