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SN74LV245APWR 输入阻抗是不是无穷大



您好,请问SN74LV245APWR buffer的输入阻抗是不是无穷大?这边一个信号接5V上拉一路输出,一路接到SN74LV245APWR缓冲器,5V会不会被分压了导致不是5V,或者这边有没有什么器件输入内阻无穷大可以推荐的

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