A1458 Optocoupler Datasheet Site

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

Delivers the isolated output signal.

If the original component sourced from UTSource or Heisener Electronics is unavailable, cross-reference the datasheet with these alternative part numbers depending on speed and pin-compatibility requirements: Single Channel, High Speed Optocouplers Technical Data

– I see no common industry optocoupler named “A1458.” Could it be a misreading of: a1458 optocoupler datasheet

Available in standard surface-mount (SMD) and dual-in-line (DIP) packaging for versatile PCB design.

If you need a specific type of sensor or a device from a different manufacturer like Allegro, I can also look that up. I can help find similar components to help with your design, such as looking for a different Allegro MicroSystems magnetic speed sensor or a phototransistor from a different vendor. Share public link

voltage spikes across the isolation barrier. Without high CMTI, these transients couple through the internal parasitic capacitance of the optocoupler, inducing false trigs at the output. With a minimum rating of up to 50 kV/µs, the A1458 shields downstream microcontrollers from destructive noise. Primary Engineering Applications Here is what you need to look for when reading the

You need a resistor in series with the LED.

: Ground loop elimination and signal isolation for TTL/CMOS high-speed logic .

You need to turn on a 24V relay using a 3.3V ESP32 or 5V Arduino. Direct connection is impossible. You use the A1458: If you need a specific type of sensor

Before trusting the A1458 datasheet, perform this 30-second test:

| Parameter | Symbol | Typical Value | Unit | | :--- | :--- | :--- | :--- | | Rise Time | tr | 4 | µs | | Fall Time | tf | 3 | µs | | Turn-on Time | ton | 5 | µs | | Turn-off Time | toff | 4 | µs |