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TL331输入输出逻辑关系的问题

Other Parts Discussed in Thread: TL331

TL331手册里两段话矛盾了

一段是 “正输入高于负输入时 输出NPN管灌电流” 那么输出就为低

另一段是 “负输入低于正输入时 输出为高阻 输出三极管不工作” 那么输出就为高

具体见图

请问实际应该是怎么样的