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如果驱动OC或OD门的话,建议改成TXS0108,TXBxx不适用在这类OD或O应用中。
另外需要注意这类电平转换器件的DC驱动能力很弱,所以如果需要驱动负载的话,建议使用SN74xx系列电平转换器件。