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TXB0102DCU VCCA存在而VCCB掉电,是否存在闩锁风险?

Other Parts Discussed in Thread: TXB0102

如题, 由于功耗管理要求,需要在合适的时候将VCCB(3.3V)关断,考虑用GPIO(1.8V)同时控制3.3V电源EN和TXB0102的OE。 如此,将导致VCCB掉电而VCCA有电(1.8V),这样子做有没有风险?  如可行,TI是否有这样用的 TI design参考,或者文档描述?

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