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https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1455433/sn74lvc08a-please-recommend-a-quad-2-input-and-gate-chip
工具与软件：
请推荐一个与 MC74HC08A P2P 兼容的四路2输入与门芯片、该芯片要求其在上电时输出低电平、或在输入或输出端具有下拉电阻器。
SN74HC08是 P2P。
没有可确保其输出为低电平的器件。 您必须在输入端添加外部下拉电阻器。
