Need hardware advice: ULN2003A

[Luciano]

@Luciano,

If your field is large, I guess it could. The problem is that the clamp diodes within the ULN2003A are most likely not matched and you are forcing that large field into one diode for a very short time. Maybe one way to mitigate that problem would be to put discrite resistors on each output to ensure the current does not go above an acceptable level. I don't have formal education to confirm this but it sounds like it may work.

The diode is not a problem because when the outputs are paralleled you will
have from two up to seven protection diodes in the circuit.

The datasheet says that: (Sorry I did not see that).

The collector-current rating of a single Darlington pair is 500 mA.
The Darlington pairs can be paralleled for higher current capability.

The datasheet says that, go head and connect the buffers in parallel
following the rules of figure 14 and figure 15 of the TI datasheet.

To put resistors on each output to ensure the current does not go above
an acceptable level is a good idea. (For the buffers and for the diodes
if they are not matched).

Best regards,

Luciano