: Found in switching power supplies and DC-DC converters.
The search for a is a classic case of part number confusion. While the 1458 is a legendary dual op-amp, no mainstream optocoupler bears that exact label. However, by understanding the anatomy of a standard optocoupler datasheet (CTR, VISO, timing, and pinout) as exemplified by the 4N35 or PC817, you can effectively use any general-purpose optoisolator you encounter. 1458 optocoupler datasheet
Because "1458" is a very common part number, ensure you aren't actually looking for one of these: MC1458 Dual Op-Amp Go to product viewer dialog for this item. : Found in switching power supplies and DC-DC converters