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PCA9557进入Standby模式后,IO口状态是否可以保持?

Other Parts Discussed in Thread: PCA9557, TCA6408A

如题,I2C总线 IO口扩展芯片 例如PCA9557,在进入Standby Mode后,IO口状态是否可以维持?

是不是这类芯片的特性都是一致的?

另外,希望可以推荐工作电流更低的IO扩展芯片,需求为I2C协议,8通道IO,3态输出,谢谢!