Read: 421 times
Mt Airy, Nc
|#68028 - RE: ULN2803 Output droping at 3KHz.|
Responding to: ???'s previous message
What are you pulling the cable up with ? A 2803 is a sinking driver.
If you have a high resistance pull-up (such as the inputs at the other end) it does not take much cable capacitance to drop the voltage at the receiver.
The easy way to determine if capacitive loading is your problem is with a scope.