HCPL-261N-520

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Optoisolators are electrical components that protect electronic circuits from voltage and current surges by providing electrical isolation. They are often used where the input (control) and output (controllable) are at different voltage potentials, and to provide a low-noise environment for sensitive circuits. The HCPL-261N-520 is an optoisolator belonging to the Logic Output category.

The HCPL-261N-520 optoisolator is a general purpose optoisolator with its integrated logic output. It is a small package with 4 pin dual-in-line option presenting an input current up to 6mA. It has a spectral response of 880nm, and can withstand a maximum operating temperature of +100°C. It provides a logic output of 3.0V trip point, drawing a maximum current of 10mA. It offers ESD protection on both sides of the isolated circuit, as well as a minimum isolation voltage of 5kV RMS.

The HCPL-261N-520 optoisolator finds use in various industrial applications. Its logic output shutdown technology works well for motor control circuit protection, instrumentation isolation, and user interface sensing and switching applications. The low inrush current and low input current requirements make it suitable for use in battery and portable applications where energy efficiency is key. It is also used extensively in medical electronics for its reliable isolation and stability.

The working principle of the HCPL-261N-520 optoisolator involves the use of a LED and an integrated photo detector combined in one package. The input (driver) is connected to the LED via the four pins, and when the LED emits infrared light, it is detected by the photo detector, which converts the light into electrical signals. The photo detector amplifies the signal and sends it to output logic driver, which converts the signal into a TTL compatible signal.

The HCPL-261N-520 optoisolator provides an effective means of isolating two circuits from one another, thus protecting the sensitive circuits from power spikes, and providing accurate control. Its small form factor and high reliability make it an ideal choice in many industrial and medical applications that require reliable circuit isolation.

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