HCPL-273L-000E

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Optoisolators are essential components in today\'s circuitry, allowing signals to travel across circuits without the risk of interference. HCPL-273L-000E is an optoisolator that belongs to Transistor Photovoltaic Output type, widely used in digital, communications, and analog applications. This type of optoisolator is designed to electrically isolate one side of a system from the other in order to prevent transients, over voltage, and ground loops.

Application Fields

HCPL-273L-000E is applicable in a variety of fields due to its high performance, including the following:

• Power sequencing
• Level conversions
• Flicker and noise elimination
• Digital, analog and communication systems
• RS485 and CanBus communication systems

Working Principle

HCPL-273L-000E is composed of a photodiode optically coupled to a logic gate output transistor. When the LED within the optoisolator is illuminated with an input signal, the current flows through the optoisolator and activates the output transistor. The output is driven either by an NPN or PNP transistor, depending on the input current. The output is then switched between the collector and sink pins depending on the applied voltage. When the voltage is applied, the output will be in an active high state, and the output voltage will be pulled up and connected to the source.

HCPL-273L-000E also features an internal current limiting resistor which ensures that the output current does not exceed the maximum allowable current. The collector pin can also be driven by the output of a MOSFET, allowing a wider range of applications. Additionally, the use of an isolated supply allows the use of a single supply, eliminating the need for dual power supplies.

In addition to providing protection from high voltage transients, HCPL-273L-000E is also designed to protect against ground loops. Ground loops are caused when two connected circuits have different grounding points, but share the same reference voltage. This can cause interference and erratic behavior. With the optoisolator, however, the different ground points are isolated, preventing any interference or damage.

The HCPL-273L-000E is an excellent choice for a variety of applications, allowing signals to travel between circuits swiftly and safely. Its superior performance and reliability make it an ideal component for a wide variety of uses. From powering and sequencing systems to eliminating noise and interference, HCPL-273L-000E has you covered.

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