Two isolated channels in one package.
: The primary purpose of the A1458 is to provide a barrier between two circuits. On your PCB, ensure there is a clear physical gap (a slot or a "no-copper" area) under the optocoupler to maintain the high isolation voltage rating. This is often called a "moat." a1458 optocoupler datasheet
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Two isolated channels in one package
Formula: RIN=VLOGIC−VFIFFormula: cap R sub cap I cap N end-sub equals the fraction with numerator cap V sub cap L cap O cap G cap I cap C end-sub minus cap V sub cap F and denominator cap I sub cap F end-fraction 7. Conclusion This is often called a "moat
If the output only drops to 1.5V, the A1458 has a damaged phototransistor or a false datasheet.
Page 3 of the official usually contains a "Test Circuit" diagram. Here is the standard configuration for digital signal isolation: