A1458 Optocoupler Datasheet [top] Jun 2026

Always consult the official manufacturer's datasheet from Broadcom (formerly Avago Technologies) for the most up-to-date and detailed specifications, including absolute maximum ratings, thermal characteristics, and detailed application notes. Understanding the intricacies of this datasheet will allow you to fully leverage the A1458's capabilities to create safer, more resilient, and high-performance electronic systems.

Operating the device beyond these limits can cause permanent damage. All ratings are measured at an ambient temperature ( TAcap T sub cap A ) of 25°C unless otherwise specified. TSTGcap T sub cap S cap T cap G end-sub -55 to +125 Operating Temperature TAcap T sub cap A -40 to +85 Forward Input Current (Continuous) IFcap I sub cap F Peak Transient Input Current

Engineers must evaluate several essential parametric limits from the datasheet when designing high-speed digital systems with the A1458: Specification / Value Engineering Context VRMScap V sub cap R cap M cap S end-sub

Protects sensitive MCUs from voltage spikes and noise while communicating with external hardware. Packaging Information a1458 optocoupler datasheet

Applying those datasheet details, Mara redesigned the input resistor and added a small pull-up on the output so the phototransistor would switch cleanly into the microcontroller’s input. She derated the device for higher temperatures and added a snubber across the motor so voltage spikes wouldn’t exceed the A1458’s isolation rating. On the PCB she followed the recommended clearance distances, and in firmware she added a timeout to detect any stuck output that might indicate LED failure.

Based on recommendations in the and industry best practices:

The (frequently cross-referenced as the HCPL-1458 or HP1458 by Broadcom/Avago Technologies ) is a high-performance, high-speed, single-channel logic gate optocoupler engineered for ultra-fast digital logic isolation. Designed to prevent ground loops and shield low-voltage control circuits from high-voltage spikes, this component delivers a fast data rate of 1 Mb/s , combined with a low power consumption profile. All ratings are measured at an ambient temperature

Graphs show how parameters like CTR, propagation delay, and supply current vary with temperature, input current, and other conditions. These are invaluable for designing robust circuits.

If you are designing a circuit or replacing a component:

The combination of high-speed performance and high voltage isolation makes the A1458 an essential component in several industries: She derated the device for higher temperatures and

: 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)

The (widely documented in component catalogs as the HCPL-1458 or HCPL-A1458 ) is a high-speed, high-performance logic gate optoisolator manufactured by Broadcom (formerly Avago Technologies). Engineered primarily for high-speed signal isolation in rugged industrial or low-voltage systems, this component leverages a hermetically sealed architecture to deliver excellent common-mode transient immunity and stable high-data-rate throughput.