A1458 Optocoupler Datasheet !!exclusive!! File

When a new optocoupler part number like crosses your desk, the datasheet is the only source of truth. Unlike standard jellybean parts (e.g., 4N25), an "A1458" suggests either a proprietary manufacturer code, a high-reliability (Hi-Rel) military/aerospace component, or a specific binning of a common device.

: Open Collector , allowing for flexible output voltage levels (up to 20V) and easy interfacing with TTL/CMOS logic . Pin Configuration (8-Pin DIP/SO-8)

: Used for isolating control signals in solar inverters and industrial AC motor drives. Power Supplies

The standard DIP-4 pinout is as follows: a1458 optocoupler datasheet

| Parameter | Symbol | Conditions | Typ | Max | Unit | |-----------|--------|-------------|-----|-----|------| | Rise Time | t_r | V_CE = 2V, I_C = 2mA, R_L = 100Ω | 4 | 18 | μs | | Fall Time | t_f | Same as above | 3 | 18 | μs | | Turn-On Time | t_on | I_F = 10 mA to I_C = 2mA | 5 | 20 | μs | | Turn-Off Time | t_off | Same | 4 | 20 | μs |

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In long-distance data communication lines, ground potential differences between nodes can create massive ground loop currents. When a new optocoupler part number like crosses

Here is what you need to look for when reading the .

Note that the output is often an open collector, meaning you will need a pull-up resistor to define the logic "High" state. 📋 Guide to Reading the Datasheet

When designing with the A1458, pay close attention to: Pin Configuration (8-Pin DIP/SO-8) : Used for isolating

To get the most out of your A1458, keep these design principles in mind:

To use any component effectively, you must understand its absolute maximum ratings and electrical characteristics. Below is a distilation of the official .