HCPL-263N-020E

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Optoisolators, also known as optocouplers, have become an essential component in many electrical circuitry designs due to their remarkably reliable electrical isolation and high noise immunity. This article will look specifically at the Optoisolators - Logic Output category, highlighting the HCPL-263N-020E as an example.

HCPL-263N-020E Overview

The HCPL-263N-020E from Avago is an optoisolator with a nominal output rating of 5VDC. The current transfer ratio (CTR) ranges from 40% to 600%, and the output type is NPN open collector, meaning that it will be activated by a voltage applied to its input (control) path and will provide a low-level output to the load, thus allowing for a robust electrical isolation between the input and output circuits. It has a total power dissipation of 250mW, a storage temperature range of −40°C to 125°C and a continuous forward current of 100 mA.

Application Fields

Due to its features and characteristics, the HCPL-263N-020E is ideal for use in a variety of applications, including:

• Overvoltage and overload protection for digital circuits.
• Isolating noisy digital signals.
• Maintaining reliability in noisy electrical environments.
• Controlling current flow through contactless switching applications.
• Interfacing between different digital systems.
• Automotive control systems.

Working Principle

The HCPL-263N-020E includes a hermetically sealed infrared emitter and a high-gain NPN silicon photo transistor encased within a single 4-pin package. When the emitter is powered, the light output is directed towards the photo transistor which is then activated and switched ON. This produces a low-level output signal at the collector of the transistor. The package also includes a crosstalk suppression feature, which increases the common-mode transient immunity, allowing it to be used in applications with high electro-magnetic interference (EMI).

The optoisolator is able to provide fault protection from overvoltages or excessive load currents between the input and output circuits. This protection is due to the input signal and output load being electrically isolated from each other, allowing a decrease in the capacitive coupling and electrostatic interference when compared to connection via a direct wire. This means that the HCPL-263N-020E is able to prevent damage to any circuit components due to these disturbances, providing a high level of reliability and robustness.

Conclusion

The HCPL-263N-020E from Avago is an optoisolator designed for use with logic level switching circuits and is ideal for applications requiring electrical isolation and noise immunity. It is able to provide fault protection from overvoltages or excessive load currents, ensuring a high level of reliability and robustness. The HCPL-263N-020E is a great option for anyone looking for an optoisolator for use in noisy industrial or automotive control systems.

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