Hi
I'm protecting some in/output pins by use of optocouplers. The optocouplers to be used are 74ol6000. Both in- and output side is connected to 5V. These are isolated from each other. I'm not sure how to calculate The current limiting resistor on The input side.....
Could anyone please provide some hints to get The calculation right?
The microcontroller is able to sink/source 3mA.
I'm protecting some in/output pins by use of optocouplers. The optocouplers to be used are 74ol6000. Both in- and output side is connected to 5V. These are isolated from each other. I'm not sure how to calculate The current limiting resistor on The input side.....
Could anyone please provide some hints to get The calculation right?
The microcontroller is able to sink/source 3mA.