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现在有2路RS422，但是接口只有1路可以引出，需要可配置切换哪一路作为输出，TI有用于此应用的多路复用器芯片么？
TS5A22366
如果考虑到RS422的共模电压范围+-7V的话，那么TI的多路开关没有负压可支持到7V的呢。
