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https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1333579/sa555-regarding-the-input-timing-of-the-reset-pin-of-sa555dr
在输入 Vcc 电压之前、向复位端子输入信号是否可以？
您好！
不可以、当断电时、高于 Vcc 值将为零伏的复位引脚可能会对器件造成永久损坏或影响其可靠性。 复位可以跟踪 VCC、但不应超过 Vcc。
此致、
克里斯·费瑟斯通
