Switch to open drain instead of push pull output

[mwelling]

With the current configuration when the line drives high it fries the BMD-340.

Use MCP73832 instead.

[mwelling]

Here is the open drain equivalent: https://www.digikey.com/product-detail/en/microchip-technology/MCP73832T-2ACI-MC/MCP73832T-2ACI-MCCT-ND/7065592