What is the name of this chip on Arduino Mega ? I am not finding its datasheet 56 TI MSP?
There is only one 8-pin SMD IC on the top side of the Arduino Mega 2560.

From the schematic
it appears to be the &quot;LMV358IDGKR&quot; a TI dual op-amp used for two separate functions on the Mega.

Selecting power source - VIN vs USB.
Illuminating the built-in &quot;L&quot; LED (on D13) without loading PB7