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MAX3232E Unpowered with DIN Pins Driven by 3.3V Logic?

Other Parts Discussed in Thread: MAX3232E

I would like to configure a MAX3232ECPWR so that most of the time it will be unpowered with data driven into its DIN pins.  The datasheet makes it clear that the RS-232 Rin pins may be driven when the MAX3232E is unpowered, but can the DIN pins be driven by 3.3V logic when the device is unpowered?

Thanks,
Mac