1458 Optocoupler Datasheet Patched Jun 2026

There is no industry-standard optocoupler with the primary designation "1458." The "1458" is famously a dual operational amplifier (e.g., LM1458, UA1458). This paper addresses that ambiguity, clarifies the likely confusion, and provides a rigorous methodological framework for analyzing an optocoupler datasheet, using a real, similar device (e.g., 4N35) as a practical example.

The 1458 optocoupler is a dual-channel device that consists of two LEDs and two phototransistors, packaged in a 8-pin DIP (Dual In-line Package) or SOP (Small Outline Package). Its primary function is to transfer signals between two electrically isolated circuits while providing protection against high voltage spikes, noise, and other forms of electrical interference. 1458 optocoupler datasheet