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寻一款8位数据总线转换器

你好!

      我现在用的单片机是51的,驱动能力比较弱,已经带了8个负载了,现在想在P0口处增加一个8位数据总线驱动器。因为仪器是成熟品,不能更改软件了。74HC245是不能选择了,有什么芯片功能跟74HC245一样,且不需要软件控制的。MCU是5V供电,后续的负载也是5V供电。有什么好的推荐吗?