1458 Optocoupler Datasheet Jun 2026

| 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. |

Which of these specific components are you building into your project? AI responses may include mistakes. Learn more MC1458 - STMicroelectronics

Understanding the pinout is critical for PCB layout and prototyping. Below is the standard pin mapping for a 6-pin phototransistor optocoupler like the 1458: 1458 optocoupler datasheet

The phototransistor amplifies this current, allowing a larger current to flow from the collector (Pin 5) to the emitter (Pin 4), completing the output circuit or switching a load. 6. Practical Application Circuits

Assuming your "1458 optocoupler" is a standard DIP-6, here is the pinout (identical to 4N35, PC817, and most general-purpose types): | Pin | Name | Function | |

Since obtaining the official PDF might be challenging, the following table compiles the most critical electrical characteristics from various trusted sources. Always verify with the official manufacturer's datasheet for your specific application.

For the 4N35 at I_F = 10mA, V_CE = 10V:

A 3.3V GPIO cannot drive a 24V industrial PLC input. Use an optocoupler:

Go to Mouser, Digi-Key, or LCSC. Type "DIP-6 optocoupler" and sort by CTR. Do not type "1458" unless you want op-amps. | | 4 | GND | Ground connection for the output side

| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | | :--- | :---: | :--- | :---: | :---: | :---: | :---: | | | | | | | | | | Forward Voltage | $V_F$ | $I_F = 20 \text mA$ | - | 1.2 | 1.4 | V | | Reverse Current | $I_R$ | $V_R = 4 \text V$ | - | - | 10 | $\mu A$ | | Output | | | | | | | | Collector Dark Current | $I_CEO$ | $V_CE = 20 \text V$ | - | - | 100 | nA | | Transfer Characteristics | | | | | | | | Current Transfer Ratio | CTR | $I_F = 5 \text mA, V_CE=5\textV$ | 50* | - | - | % | | Saturation Voltage | $V_CE(sat)$ | $I_F = 20 \text mA, I_C=1\textmA$ | - | 0.1 | 0.2 | V | | Switching Times | | | | | | | | Rise Time | $t_r$ | $V_CC=5\textV, I_C=2\textmA$ | - | 4 | 18 | $\mu s$ | | Fall Time | $t_f$ | $R_L=100 \Omega$ | - | 3 | 18 | $\mu s$ |