TLP7820(A,TL,E

Overview

The TLP7820 is a high-speed optocoupler featuring an AlGaAs LED coupled to a monolithic integrated circuit output. It provides electrical isolation between input and output circuits while transmitting digital signals. The device operates with a typical propagation delay of 1 microsecond, ensuring fast response times for data transmission applications. It supports a common-mode transient immunity of 50 kV per microsecond, offering robust noise rejection in electrically noisy environments. The output stage is designed as a totem-pole configuration, providing strong drive capability for interfacing with various logic families.

Feature Summary

• High-speed signal transmission with low propagation delay
• High common-mode transient immunity for noise resistance
• Totem-pole output structure for enhanced drive strength

Applications

• Data communication interfaces
• Industrial control systems
• Measurement equipment

Procurement Notes

Verify the specific suffix (A, TL, or E) against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure the selected variant matches the required operating temperature range and insulation ratings for your specific design constraints. Cross-reference ordering codes with official Toshiba Semiconductor and Storage documentation to avoid discrepancies in lead times or packaging quantities.

Selection Notes

Choose this component when high-speed isolation is required alongside robust noise immunity. The totem-pole output makes it suitable for driving capacitive loads directly. Consider the voltage isolation rating and input forward current requirements relative to the target logic family. Verify that the operating frequency range aligns with the system's data rate needs without introducing excessive jitter or distortion.

Part Context

This part belongs to Toshiba's TLP78xx series of high-speed optocouplers. These devices are engineered for applications demanding rapid signal transfer across isolated boundaries. The series typically utilizes AlGaAs light-emitting diodes for efficient optical coupling. They are designed to replace slower relay-based solutions or standard optocouplers in high-frequency digital circuits.

Replacement Considerations

Check for direct pin-compatible alternatives within the same high-speed isolation category. Verify that substitute parts meet or exceed the 50 kV/us common-mode transient immunity specification. Ensure the replacement maintains compatible input current requirements and output voltage levels for seamless integration into existing designs.