I've curious if there's an industry standard method used to determine the IC on a board. Specifically, I've been wondering as I have an IC that I want to replace. It seems to have failed, but there's not manufacturer mark. Is there a database somewhere where you can enter the code and get possible hits? In my case, my bad IC is a "DOT 201 139".
The 201 is the manufacturer identifier, but no manufacturer has a "DOT" to my knowledge. Also, the SOIC-8 is really tall. This is enough information if there was central database to probably narrow it down, but I've been unable to find anything through web searches. I'm sure this problem isn't unique to me, and there must be some way that the IC industry agrees on how to find replacements, no?
update The circuit drives the gates of IGBTs that then run a solenoid. There's two of these drivers where one turns on and one turns off so that the coil field is bidirectional. It's weird that it's an H-bridge where the "center" is GND, so it has V+ and V- and then common, which is GND in this case. The best guess on the schematic is follows (I left off the connection to the 222 resistors):