The MAX14780E typically takes around 3us to foldback an output short-circuit event.
The driver output short-circuit foldback current limit is shown in action below. The MAX14780EESA+ was supplied 5V at VCC with RO open, /RE and DE tied to VCC, 5V at DI, and A and B not terminated with no load. For this particular MAX14780EESA+, the foldback current limit is around 80mA. The minimum foldback current as specified in the datasheet for this configuration is 20mA.
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The driver output short-circuit foldback current limit is shown in action below. The MAX14780EESA+ was supplied 5V at VCC with RO open, /RE and DE tied to VCC, 5V at DI, and A and B not terminated with no load. For this particular MAX14780EESA+, the foldback current limit is around 80mA. The minimum foldback current as specified in the datasheet for this configuration is 20mA.