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这颗芯片只是一颗电平转换芯片,没有多大驱动能力的,建议你不要试图用这颗芯片驱动线缆,因为线缆等效的容性负载太大。你可以看一下手册12页的测试条件图,芯片测试时,容性负载只给到15pF。TXS0108E也是类似的,测试时容性负载只给到15pF,没有给更高。如果试图驱动线缆,可以去TI官网找找专门的cable driver芯片。