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https://e2e.ti.com/support/logic-group/logic/f/logic-forum/569316/sn74lv574a-oe-pin-connection
您好,
请让我询问有关/OE引脚连接和通电时的行为。
此致,
Sonoki /日本Disty.
您好,Satoshi - San,
要直接回答您的问题:
1./OE引脚应通过上拉电阻器连接到Vcc,如第2页的数据表中所述。
2.为确保在加电/断电期间处于高阻抗状态,应将/OE连接到Vcc。 如果/OE引脚接地,则在通电过程中输出未定义。
有一个应用说明,解释了计时器设备的开机状态, 如此处所述。