TTL输入端悬空三极管截止,相当于高电平输入,SN74ABT245文档太简单,不知是否也由此特性?
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TTL输入端悬空三极管截止,相当于高电平输入,SN74ABT245文档太简单,不知是否也由此特性?
ABT代表Advanced BiCMOS Technology,不可以将输入悬空,详细的技术文献如下:
http://www.ti.com.cn/general/cn/docs/lit/getliterature.tsp?literatureNumber=scba008b&fileType=pdf
如果您需要的是BUS HOLD function可以用ABTH 系列的器件,输入可以悬空
http://www.ti.com.cn/general/cn/docs/lit/getliterature.tsp?literatureNumber=scba001a&fileType=pdf