1458 Optocoupler Datasheet _verified_ Jun 2026

In the electronics industry, the number is most famously associated with a Dual Operational Amplifier (like the MC1458 or LM1458). These are analog chips, not optocouplers. They have 8 pins and look identical to an optocoupler IC, but they function completely differently.

Designed for high-voltage galvanic isolation barriers to prevent ground loops. Core Functionality Like most optocouplers, the consists of two primary internal components: Input Side: 1458 optocoupler datasheet

: Designed for applications where signal amplification and isolation are needed simultaneously. In the electronics industry, the number is most

: Isolating power transistors and feedback elements. | Pin | Name | Function | |

| Pin | Name | Function | | :--- | :--- | :--- | | | V⁺ (Anode) | Anode of the internal infrared LED (Input). | | 2 | V⁻ (Cathode) | Cathode of the internal infrared LED (Input). | | 3 | NC | Not Connected. | | 4 | GND | Ground connection for the output side. | | 5 | V₀ (Output) | Open-collector output of the photodetector. | | 6 | VCC (Cathode) | Power supply for the output side. | | 7 | NC | Not Connected. | | 8 | VE (Enable) | Output enable pin. |

Over years of continuous operation, the light output of the internal LED will gradually decrease. Designers typically factor in a 20% to 50% safety margin for high-reliability systems. 6. Primary Applications