HCPL-2232-500E Isolators

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Optoisolators are a family of devices that use a short channel of light within an electrically insulated frame to separate two independent circuits. One input circuit is called the source, and the other is referred to as the load. The HCPL-2232-500E is an optoisolator designed to provide logic outputs from a variety of input signals, including digital. This application field and working principle will be discussed in this article.

The HCPL-2232-500E is an optoisolator of the data bus type with an additional protective diode for noise suppression. This device is designed to respond to low voltage logic input signals while providing extremely isolated logic outputs with a low level threshold. The high speed switching responses make it ideal for digital control systems with signal frequencies as high as 15 MHz. The HCPL-2232-500E is available in various package types, including side-lit Rohs or UL compatible DIP, and an SMT TSSOP-14 package.

The typical application field for this optoisolator is logic outputs on factory automation and process control systems, as well as digital input/output for computers. It is also a perfect choice for applications that require extremely isolated outputs with noise rejection, such as pulse width modulation (PWM) signal detection and high-speed counting and timing. Furthermore, the HCPL-2232-500E is perfectly suited for applications which require a low level input, such as cameras, motion controllers, and servo controllers.

Now let’s take a look at the working principle of the HCPL-2232-500E. The optoisolator is made of two parts: the light-emitting diode (LED) and the phototransistor (PT). The input signal (digital logic 0 or 1) is applied to the LED, which then projects an LED light, and the interference-free current-transfer takes place through the optocoupler. The PT, which is located on the other side of the optocoupler, will convert the LED light into a photocurrent. The PT’s collector voltage will either be a logic 0 or 1, depending on the input. This “isolated logic output” will be available at the outputs, providing a high level of signal isolation.

In conclusion, the HCPL-2232-500E optoisolator is a perfect choice for various industrial and automation applications due to its logic output capability and isolated outputs with noise rejection. It is also one of the most versatile optoisolators available, with features such as high speed switching capability, extremely low level input, and multiple package types. Powerful, yet highly reliable performance makes this optoisolator a must-have for any industry that requires an isolated logic output.

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