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https://e2e.ti.com/support/switches-multiplexers-group/switches-multiplexers/f/switches-multiplexers-forum/1179107/sn74cbtd3306-switches-multiplexers-forum
SN743306是否只能运行开关功能？
输入为5V 电平、输出也为5V 电平。
该器件输出3.3V 电压
请改用 SN74LVC2G66。
您好、Su、 SN74CBTD3306不会使输出电压达到5V。 如果您只想切换5V 信号、SN74LVC2G66是一个不错的选择。 如果您正在寻找能够重新驱动5V 信号的器件、则需要寻找一个缓冲器。 谢谢、 Rami
