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SN74LV244 datasheet中有两个参数Ii、Icc（见图片标黄字样），该参数的含义是什么？请教各位！是表示最大允许输入电流值吗？
您好，这两个电流参数的定义如下：
Ii： The current into an input (current into a terminal is given as a positive value).
指的是流经输入端的最大sink/source电流大小，其中+表示流入输入端电流大小，-号表示流出电流大小.
Icc： The current into the VCC supply terminal of an integrated circuit.
电流流入到VCC端的最大电流大小。
