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https://e2e.ti.com/support/logic-group/logic/f/logic-forum/741619/sn74axc8t245-multiple-direction-control
我要确认 、对于 SN74AXC8T245器 件、当 VCCB 使用+3.3V 电源供电时、B 输出为高阻抗(三态)、而 VCCA 电源关闭时、OE 引脚接地。
