I intend to use PCAL6524, and I was wondering about power supply translation possibilities.Can the device operate with one supply off, either VI2C or VP?Can their be dammage on the device on such case?Thx
No, it will not damage the device.
If I2C interface is not powered then I2C interface will not work, but the I/Os will still work if RESETN pin is tied to VDDP.
If I/O interface is not powered then nothing works since core operation is from I/O power and POR circuitry is also powered off.
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