1458 Optocoupler Datasheet

The input side of an optocoupler is essentially an Infrared (IR) LED.

| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | |-----------|--------|------------|-----|-----|-----|------| | Rise time | ( t_r ) | - | - | 4 | 18 | µs | | Fall time | ( t_f ) | - | - | 3 | 18 | µs | | Turn-on time | ( t_on ) | - | - | 6 | - | µs | | Turn-off time | ( t_off ) | - | - | 5 | - | µs | 1458 optocoupler datasheet

Note: Switching times vary with load resistor and transistor biasing. The input side of an optocoupler is essentially

Optocouplers are slow compared to logic gates. If you try to send a 1 MHz

If you try to send a 1 MHz signal through a standard 4N35, it will turn into a triangle wave. For fast communication, you need a high-speed optocoupler (like the 6N137), not a 1458 equivalent.

| Parameter | Symbol | Rating | Unit | |-----------|--------|--------|------| | Forward current (input) | ( I_F ) | 50 | mA | | Peak forward current (1 µs pulse, 300 pps) | ( I_FP ) | 1 | A | | Reverse voltage (input) | ( V_R ) | 6 | V | | Collector-emitter voltage (output) | ( V_CEO ) | 35 | V | | Emitter-collector voltage | ( V_ECO ) | 6 | V | | Collector current | ( I_C ) | 50 | mA | | Collector power dissipation | ( P_C ) | 150 | mW | | Total power dissipation | ( P_tot ) | 200 | mW | | Isolation voltage (1 minute) | ( V_ISO ) | 5000 | Vrms | | Operating temperature | ( T_opr ) | -55 to +110 | °C | | Storage temperature | ( T_stg ) | -55 to +125 | °C | | Soldering temperature (10 sec) | ( T_sol ) | 260 | °C |