目前使用74lv245 完成 10ns脉宽 30KHz重频的脉冲信号电平转换,想咨询下74lv245使能后内部输出阻抗为多少?输出端外侧的匹配电阻怎么选?
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目前使用74lv245 完成 10ns脉宽 30KHz重频的脉冲信号电平转换,想咨询下74lv245使能后内部输出阻抗为多少?输出端外侧的匹配电阻怎么选?