– Left floating; provides physical spacing to increase the breakdown voltage between the input and output stages.
The LED side of the optocoupler requires a specific amount of current to turn on. The
Because "1458" is a very common part number, ensure you aren't actually looking for one of these: MC1458 Dual Op-Amp Go to product viewer dialog for this item. 1458 optocoupler datasheet
Provides a high insulation voltage of 5000 Vrms (or 3750 Vrms for certain packages like the standard 8-pin DIP).
is a high-speed, logic-gate output optocoupler designed for digital signal isolation. It is primarily used in industrial and electronic applications to protect low-voltage microcontrollers from high-voltage spikes. Ovaga Technologies Key Technical Specifications Based on typical datasheet parameters for the Isolation Voltage: Typically rated at to ensure safe electrical separation. Propagation Delay: Very fast response, with delays as low as maximum for some logic gate variants, or roughly in high-speed switching configurations. Supply Voltage ( cap V sub cap C cap C end-sub Flexible range from 3.0V to 5.5V , making it compatible with both 3.3V and 5V logic systems. Package Type: Available in a hermetically sealed – Left floating; provides physical spacing to increase
: Certified to work reliably from -40∘Cnegative 40 raised to the composed with power C +100∘Cpositive 100 raised to the composed with power C across harsh industrial environments. Core Applications
Electrical characteristics define how the 1458 optocoupler performs under standard operating conditions. Input Characteristics Test Conditions Forward Voltage VFcap V sub cap F Reverse Current IRcap I sub cap R Capacitance CJcap C sub cap J Output Characteristics Test Conditions Breakdown Voltage ( Provides a high insulation voltage of 5000 Vrms
Frequently used to safely step control signals up to the isolated gate driver stages that manipulate IGBTs and Power MOSFETs in power converters.
When reading the datasheet for a standard transistor optocoupler, these are the critical parameters you need to check to ensure it fits your circuit.
If the phototransistor (Pins 4 and 5) is switching an inductive load like a mechanical relay, solenoid, or DC motor, always place a flyback diode (e.g., 1N4007) in parallel with the load to prevent high-voltage inductive spikes from destroying the transistor. De-coupling Capacitors: Place a 0.1