TLP781 SMD OPTOCOUPLER SOP-4

The TLP781 is a surface-mount optocoupler (also known as an optoisolator) housed in the compact SOP-4 package. This technical exploration equips you with the knowledge to determine if this component is the ideal solution for achieving electrical isolation and signal transmission in your electronic projects. Utilizing light to transmit signals between its input and output sides while maintaining electrical isolation. This isolation prevents current flow between the two circuits, enhancing safety and reducing noise interference.

Key Features of TLP781 surface-mount optocoupler SOP-4:

• • Optocoupler: Achieves electrical isolation between the input and output circuits, promoting safety and mitigating ground loop issues.
  • Signal Transmission: Enables the transmission of digital signals or control signals from the input side to the output side using light.
  • High Isolation Voltage: Provides a high breakdown voltage between the input and output (typically around 2.5kV), ensuring effective isolation.
  • High-Speed Switching: Capable of handling relatively fast switching speeds (refer to datasheet for specific values), suitable for various digital signaling applications.
  • Compact SOP-4 Package: Utilizes the space-saving SOP-4 surface-mount package for efficient PCB design.

Technical Specifications of TLP781 surface-mount optocoupler SOP-4:

• • Input Current (If): The maximum current required by the LED on the input side (typically in the range of milliamps).
  • Output Current (Io): The maximum current the output phototransistor can handle (typically in the range of tens of milliamps).
  • Forward Voltage (Vf): The voltage drop across the input LED (refer to datasheet for specific value).
  • Isolation Voltage (Viso): The maximum voltage that can be applied between the input and output without breakdown (typically around 2.5kV).
  • Propagation Delay (tpd): The time it takes for the output to change after a change in the input.

Applications of TLP781 surface-mount optocoupler SOP-4:

• • Microcontroller I/O Isolation: Isolates microcontroller input/output (I/O) pins from external circuits, enhancing safety and noise immunity.
  • Gate Drive Isolation: Provides isolation between a low-voltage control circuit and a high-voltage gate driver circuit in applications like motor control.
  • AC Line Sensing: Enables safe detection of the presence or absence of AC line voltage by isolating the sensing circuit from the AC mains.
  • Data Acquisition Systems: Can be used to isolate data acquisition circuits from noisy environments, improving signal integrity.

Equivalents of TLP781 surface-mount optocoupler SOP-4:

• • Several functional equivalents of the TLP781 exist, offering similar functionalities with potential variations in isolation voltage, package types, or current ratings. Some examples include the 4N25, 4N35, and PC817. Ensure compatibility with your project’s specific requirements (isolation voltage, current needs) by consulting the datasheets of these alternatives.
  • TLP781 Optocoupler
  • Optoisolator
  • Signal Isolation
  • Digital Isolator
  • SOP-4 Optocoupler

Package Includes:

• • 1 x TLP781 SMD OPTOCOUPLER SOP-4