I am planning to use the ADUM140E to convert 3.3V GPIO from an FPGA to 5V to interface with digital I/O on a servo drive. The servo drive DIO are active low and use opto-isolators with 50mA max drive. I have a couple of questions about the iCoupler:
- What is the maximum output drive, source and sink?
- Are the outputs internally current limited? For instance, if someone accidentally shorts an output pin to 5V while the output is ON, would the part get damaged?
Is there a better iCoupler part to use for this type of application? I don't really need the 150Mbps throughput of the ADUM140E series; my outputs are pretty much DC GPIO.