HCPL-181-000E Isolators

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Optoisolators are types of electronic circuits used to isolate one part of a circuit from another while transmitting data signal or other signals. In particular, optotransistors, such as the HCPL-181-000E, use a photovoltaic cell (light-generated electric current) as the input, while the collector is connected to a transistor, allowing for the signal to be applied across both sides of the circuit while being isolated from each other. This type of optoisolator also has a photodiode as an output, which converts the electrical signal into light again. This allows the use of optoisolators where two different circuits need to communicate while being electrically insulated.

The HCPL-181-000E is a transistor optoisolator with photovoltaic output, and it provides effective electrical insulation between the input and output of a circuit. It is housed in an 8-lead compact outline package with an open-collector output. This particular optoisolator utilizes a GaAs infrared LED as the input, with an integrated photovoltaic detector as the output. The photovoltaic detector is protected against overload by a unique short-circuit protecting circuit, which is designed to reduce the output current to a safe level if the transistor output current exceeds 20mA.

The HCPL-181-000E operates at a wide input range from 4V to 10V, making it suitable for a variety of applications. It is also able to withstand high temperatures and has a high speed response time, allowing it to be used in high humidity environments. This optoisolator can also provide excellent isolation between the input and output side of a circuit, making it suitable for applications such as data transmission and controls.

The HCPL-181-000E optoisolator can be used in a variety of applications. In data transmission applications, the optoisolator can be used to isolate the data signals from the power supply, thus allowing data to be transmitted safely. In control applications, the optoisolator can be used to isolate the control input signals from the control output, thus ensuring that the control output does not cause any interference in the control input. Additionally, in switching applications, the optoisolator can be used to isolate the high voltage switching side of a circuit from the low voltage circuit, which helps keep mechanical contacts safe.

The working principle of the HCPL-181-000E optoisolator is quite simple. When the infrared LED receives light, it produces electrons that move across the junction between the photovoltaic detector and the open collector output. The electrical current generated by the photovoltaic cell is then amplified by the transistor, which then sends the amplified current to the output. The output is then used to power or control an external device.

The HCPL-181-000E optoisolator is a reliable and efficient way to enable data transmission and control in circuits without sacrificing safety and reliability. Its wide input voltage range, high temperature tolerance, and high speed response time make it suitable for a wide range of applications. With its unique photovoltaic output and short-circuit protection circuit, the HCPL-181-000E is a valuable tool for improving data transmission and control in any circuit.

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