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cd4050B在3.3V供电下驱动光耦出问题

Other Parts Discussed in Thread: CD4050B

大家好。

我使用CD4050B驱动HCPL-0466的光耦。CD4050B为3.3V供电。当输入为低电平时,发现光耦没能打开。

正常工作时,需要10ma的电流流过光耦。是否是因为在3.3V工作下,CD4050的灌电流能力太小导致光耦不能打开?

另外是否能推荐在3.3V供电下,灌电流能力较强的Buffer?

谢谢。