Never exceed the forward current ( IFcap I sub cap F

Delivers the isolated output signal.

The A1458/HCPL-1458 optocoupler is a premium choice for designs requiring high-speed data isolation without compromising safety. Its impressive common-mode immunity and fast switching capabilities make it an excellent choice for modern power and industrial automation applications.

) close to the power supply pins of the isolated side to filter out high-frequency switching noise.

When looking for direct replacements, consider these points:

| Rank | CTR Min (%) | CTR Max (%) | Conditions | |------|-------------|-------------|-------------| | A | 50 | 150 | I_F = 5 mA, V_CE = 5V, Ta=25°C | | B | 80 | 240 | I_F = 5 mA, V_CE = 5V, Ta=25°C | | C | 130 | 400 | I_F = 5 mA, V_CE = 5V, Ta=25°C | | D | 200 | 600 | I_F = 5 mA, V_CE = 5V, Ta=25°C |

To correctly interface the A1458 into a hardware blueprint, engineers must refer to its standard 8-pin package layout: Single Channel, High Speed Optocouplers Technical Data

Operates at speeds up to 10 MBd, making it suitable for high-frequency switching applications like PWM (Pulse Width Modulation) in motor drives.

The A1458 is not an ultra-high-speed device (like a logic gate optocoupler, e.g., 6N137), but it is adequate for most power supply feedback and low-speed data isolation (< 50 kHz).

As environment temperatures rise, the maximum allowable collector power dissipation falls, meaning maximum system current must be derated. 6. Applications of the A1458 Optocoupler

Ideal for isolating communication lines, reducing crosstalk, and protecting equipment from surge voltages.