HCPL-0211#560

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Optoisolators are electronic devices that use infrared light to transfer signals as a means of electrical isolation. The HCPL-0211#560 is one type of optoisolator designed for logic output applications. This device combines a high-isolation Schottky-clamped photo coupler with an integrated laser diode in an 8-pin DIP format. It performs logic-level isolation between two parts of a circuit while offering up to 5,000 volts of isolation. By relying on infrared light transfer, the HCPL-0211#560 ensures minimal distortion and excellent repeatability.

HCPL-0211#560 Applications

The HCPL-0211#560 is designed for use as a digital output buffer in digital logic systems. Common applications include:

• High-level data buffering
• Digital signal isolator
• Bus isolation
• Transceivers

Working Principle

When the input is triggered, a current is generated and sent to the LED light source of the HCPL-0211#560. This light passes through the transparent isolation barrier and activates the phototransistor on the opposite side. This phototransistor then switches on its output transistor, generating a current flow and producing output voltage logic level.

Typical Connections

The HCPL-0211#560 usually consists of two or three terminals on each side. The input/output side is labeled 1, 2, and 3, while the supply side is labeled 7, 8, and 5. When power is applied to pins 7 and 8, the emitter of the output transistor is applied to pin 3. An external load can then be connected between pins 2 and 3.

Conclusion

The HCPL-0211#560 logic output optoisolator provides up to 5,000 volts of electrical isolation between two networks, such as digital and analog systems. Its simple structure and reliable performance make it ideal for a variety of applications. It can be used for anything from buffering data to bus isolation.

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