A1458 Optocoupler Datasheet Free (2025)

A good A1458 datasheet will show three standard applications:

Negative input terminal for the internal transmitter LED. Pin 4: No Internal Connection (NC).

: Features a high common-mode transient immunity (CMR) of at least 15,000 V/μs

The primary objective of implementing this component is safety and clean signal communication in high-noise, high-energy operations. It is widely applied in: Help me understanding how optocoupler works - #21 by westfw a1458 optocoupler datasheet

: Isolated line receivers and high-speed logic ground isolation. Equivalent & Substitute Parts If the A1458 is unavailable,

When researching "a1458 optocoupler datasheet", watch for these issues:

The A1458 is frequently referenced by its more complete Avago/Broadcom part numbers: (the most common version) and HCPL-A1458 (another variant). These devices are renowned for their exceptional high-speed performance, low power consumption, and high noise immunity. A good A1458 datasheet will show three standard

Based on field application notes from the datasheet, here are common issues:

Used for feedback loop isolation.

Ensure the input driver (MCU or transistor) can provide enough current for the LED to reliably switch the output. 6. Conclusion It is widely applied in: Help me understanding

The is a high-performance, high-speed optically coupled isolator used extensively in industrial and consumer electronics. In the electronics industry, the part number "A1458" is shorthand for a family of components, primarily referencing the Avago (now Broadcom) HCPL-A1458 and HCPL-1458 series.

In motor driver or inverter applications, fast-switching power stages create massive

| Model | CTR Range | Isolation | Speed (tr/tf) | Price (Relative) | | :--- | :--- | :--- | :--- | :--- | | | 50% - 600% | 5000Vrms | 4 µs | $$ | | PC817 | 50% - 600% | 5000Vrms | 4 µs | $ (Very common) | | 4N35 | 100% - 500% | 3550Vrms | 5 µs | $ | | TLP521 | 50% - 600% | 2500Vrms | 4 µs | $$ | | H11L1 | Logic output | 2500Vrms | 0.3 µs | $$$ |

The standard DIP-4 pinout is as follows: