However, I can help you in other ways:
Mechanical Note: The distance between the LED and phototransistor inside the A1458 is precisely controlled to ensure a CTR consistency of ±20% from batch to batch. a1458 optocoupler datasheet
Safely connecting a 3.3V/5V MCU to high-voltage industrial equipment. However, I can help you in other ways:
: Switching power supplies and isolated line receivers. Technical Breakdown Guidelines for Reading an Optocoupler Datasheet - Vishay a1458 optocoupler datasheet
If you are designing a circuit or replacing a component: