For the power up and down cycle of this IC (HV507) it states to connect and/or disconnect the ground. Plus remove the inputs and power supplies.
For the power supplies I would assume this would just mean turn them off.
For the inputs, I would assume this would mean just turning those off, or set them all LOW.
But why would I connect/disconnect the ground? I assume I would have to perform this using a relay?
Any help would be appreciated. HV507 datasheet, table 3.1 shows these details.