To use any component effectively, you must understand its absolute maximum ratings and electrical characteristics. Below is a distilation of the official .
When designing with the A1458, pay close attention to: a1458 optocoupler datasheet
CTR is the gain of an optocoupler: (I_C / I_F) * 100%. The A1458 offers multiple rank options: To use any component effectively, you must understand
: 3750 Vrms to 5000 Vrms (depending on the specific package and testing standard). Environmental Operating Temperature : Ranges from -40°C to +85°C. Pinout and Package The A1458 is typically housed in an 8-pin SOP (Small Outline Package) DIP-8 package Input Side To use any component effectively