1458 Optocoupler Datasheet May 2026

The input side of an optocoupler is essentially an Infrared (IR) LED.

Since you cannot buy a "1458 optocoupler" by that name, here is your shopping list based on performance needs:

| If you need... | Buy this part number... | Key Datasheet spec | | :--- | :--- | :--- | | General purpose, cheap, DC switching | PC817 (DIP-4, smaller) | CTR 50-600%, VISO 5kV | | Robust, high isolation, classic | 4N35 (DIP-6) | CTR 100%, VISO 2.5kV | | High voltage (up to 70V) output | 4N36 | VCEO 70V | | AC input detection | H11AA1 | Contains two back-to-back LEDs | | Fast digital communication (1Mbps) | 6N137 | Logic output, 10ns propagation delay | | TRIAC driver for AC mains | MOC3021 | Zero-cross or random phase | 1458 optocoupler datasheet

Search Tip: Go to Mouser, Digi-Key, or LCSC. Type "DIP-6 optocoupler" and sort by CTR. Do not type "1458" unless you want op-amps.

When working on electronic circuits that involve both high-voltage components and sensitive microcontrollers, safety is paramount. You need a bodyguard that allows the two sides to talk without ever letting them touch physically. Enter the optocoupler. The input side of an optocoupler is essentially

If you’ve landed here, you likely have a component marked "1458" in hand and are looking for its datasheet. However, before you wire it up, there is a crucial identification step you need to take. In the world of electronics, part numbers can be tricky, and "1458" is often a source of confusion.

In this post, we will decode the 1458 optocoupler datasheet, look at its specifications, pinouts, and typical applications. By the end of this guide, you will

In the world of electronics, isolation is paramount. Whether you are designing a switched-mode power supply (SMPS), a microcontroller interface for industrial machinery, or a safety circuit for a medical device, the need to separate high-voltage domains from low-voltage logic is non-negotiable. The unsung hero of this task is the optocoupler (also known as an optoisolator).

Among the sea of component numbers, "1458" appears frequently in search queries and parts lists. However, there is a critical distinction to make immediately: The "1458" is most famously a dual operational amplifier (specifically the MC1458 or LM1458), not a standard optocoupler. This confusion is common. Therefore, this article serves two purposes:

By the end of this guide, you will know exactly how to find, read, and apply the correct datasheet for your isolation needs.