This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
Note: The 1458 features faster response times than standard phototransistor optocouplers, making it suitable for low-to-medium speed data transmission (up to 1-2 MBd). Common-Mode Rejection (CMR) 10,000
Technical Analysis Division Date: October 2023 1458 optocoupler datasheet
High CMR indicates that the device can successfully reject transient noise spikes between the input and output grounds without triggering false outputs. 5. Typical Application Circuits Circuit 1: Microcontroller Interfacing (Logic Isolation)
In modern electronic design, isolation between high-voltage control circuits and low-voltage logic circuits is critical for safety and signal integrity. The is a specialized, high-speed, low-voltage optocoupler from Avago Technologies (now Broadcom) designed specifically to meet these needs in compact designs. This public link is valid for 7 days
The datasheet for the 1458 series of optocouplers is a complete technical manual that, when understood, becomes a powerful design tool. By systematically working through the sections—starting with features, moving to pinout, then to absolute maximum and electrical specifications—you can confidently integrate this versatile component into your projects and ensure both robust performance and safety.
Signal isolation for battery management systems (BMS) or electric motor controllers. Can’t copy the link right now
For use in commercial and industrial products, these optocouplers are certified by major safety organizations. They are typically under UL1577, CSA Approved , and many comply with the IEC/EN/DIN EN 60747-5-2 standard for reinforced insulation.
The "1458 optocoupler datasheet" does not exist because the LM1458 is an operational amplifier, not an optoisolator. This paper has used that misconception as a pedagogical tool to emphasize the importance of precise part number verification and structured datasheet analysis. By dissecting a real optocoupler (4N35) datasheet, we have demonstrated how to interpret CTR, switching speeds, isolation ratings, and thermal limits. Engineers must always cross-reference component designations with manufacturer databases before proceeding with design. For optocoupler needs, one should select from established families like 4N, PC, HCPL, or CNY, never relying on vague or incorrect part numbers.
Maintain adequate air separation between components on either side of the isolation plane to prevent high-voltage arcing.