TLP281-4

The TLP281-4 is a quad-channel optocoupler from Toshiba, designed to provide electrical isolation and signal transmission between different sections of electronic systems. It is commonly used in applications requiring isolation between high-voltage and low-voltage circuits. Here are its main features and specifications:

1. Functionality:
   • Quad-Channel Optocoupler: Contains four independent optocoupler channels in a single package, allowing for multiple signals to be isolated simultaneously.
2. Isolation:
   • Electrical Isolation Voltage: Provides up to 5000V RMS isolation, ensuring safe operation and preventing electrical interference between high-voltage and low-voltage sections.
3. Input and Output:
   • Input: Uses infrared LEDs to transmit signals.
   • Output: Each channel has a phototransistor output, which is capable of switching digital signals based on the input LED illumination.
4. Package Type:
   • 16-pin DIP (Dual In-Line Package): Suitable for through-hole mounting and offers a compact solution for integrating multiple isolation channels.
5. Switching Characteristics:
   • High-Speed Switching: Capable of high-speed data transmission, with typical rise and fall times of around 0.4 µs.
6. Applications:
   • Signal Isolation: Used in systems to isolate control signals from power circuits, protecting sensitive electronics from high voltage.
   • Data Communication: Suitable for isolating data lines in communication systems.
   • Switching Power Supplies: Provides feedback isolation in power supply circuits.
7. Features:
   • High Isolation Voltage: Ensures reliable isolation performance.
   • Low Input Current: Requires minimal input current to operate, improving energy efficiency.

The TLP281-4 is ideal for applications where reliable signal isolation is crucial, such as in power supply feedback loops, data communication systems, and other electronic systems requiring isolation between different voltage domains.