Question about ADM2486 fail-safe

The ADM2486s fail-safe feature works by providing a small bias to the A & B pins which will keep Va-Vb >200mV when the A & B pins are open circuited.

If the A & B pins are shorted together, then the receiver input voltage will presumably be within the +/-200mV and the output will be indeterminant.

If you need fail-safe operation under a shorted bus condition, then I'd suggest using one of our other parts with an asymmetric threshold voltage, such as the MAX14938/9

Eric

The ADM2486s fail-safe feature works by providing a small bias to the A & B pins which will keep Va-Vb >200mV when the A & B pins are open circuited.

If the A & B pins are shorted together, then the receiver input voltage will presumably be within the +/-200mV and the output will be indeterminant.

If you need fail-safe operation under a shorted bus condition, then I'd suggest using one of our other parts with an asymmetric threshold voltage, such as the MAX14938/9

Eric