NE555: 电池供电时，ne555不工作直接拉低电池电压，是ttl电平还是cmos电平

September 25, 2018, 6:53 am

Part Number:NE555

目前在用ne555驱动mos 后面时小功率 led，采用开关电源供电，ne555工作正常，换上电池（锂电/碳酸）电池电压测试13.5v ，此时已上电，电池电压就下来到1v 以内，断开测量电池电压，还是13，5v , 断开out 脚上电池，电池电压正常，请帮忙确认是什么原因

ne555是cmos还是ttl?看5v 输入时，写的是ttl 电平，请帮忙确认宽电压输入是否是cmos ，内部集成三极管就是ttl电平吧？

使用tlc555两种供电方式都正常

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