The standard DIP-4 pinout is as follows:
These values make the A1458 suitable for signals up to . For higher frequencies (e.g., >200 kHz), consider a high-speed optocoupler like the 6N137. a1458 optocoupler datasheet
Safely connecting a 3.3V/5V MCU to high-voltage industrial equipment. The standard DIP-4 pinout is as follows: These
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit | |--------------------|--------|----------------------|-----|-----|-----|------| | Rise time | t_r | IF = 10 mA | - | 4 | 8 | µs | | Fall time | t_f | IF = 10 mA | - | 3 | 6 | µs | | Turn-on time | t_on | IF = 10 mA | - | 6 | 10 | µs | | Turn-off time | t_off | IF = 10 mA | - | 5 | 8 | µs | | Parameter | Symbol | Test Condition |
| 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 | $$$ |