May I know wat should I take into consideration when it comes to designing an isolation circuit? Wat characteristics of the opto-coupler do ppl normally consider? Voltage? Current?
In most cases you will look at: voltages, speed and input (diode, gate+diode, .. etc.)/output (transistor, darlington, scr, gate, .. etc.) configuratuion ..
About other (less) important parameters you can read at: **broken link removed**
in SPECIFICATIONS section ..