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关于SN74LVC16T245-EP的VIH的问题

Other Parts Discussed in Thread: SN74LVC16T245-EP

SN74LVC16T245-EP的手册上,当VCCI为4.5 V to 5.5 V时,VIH为VCCI × 0.7,实际测量在输入为2V以上时,输出端即可稳定输出为高电平,

问题1:当VCCI为4.5 V to 5.5 V时,VIH为VCCI × 0.7,这个使用条件是否有余量?

问题2:当VCC为5V时,输入为2V以上时,输出端是否能稳定判断为高电平?