H11AA814S

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Optoisolators are opto-electronic components that have an isolated photonic transmitter with a receiving electrical circuit, providing electrical isolation of up to 1000V RMS between the two sides. An optoisolator, like other electronic isolators, prevents undesired coupling between circuits due to noise, ground loops, earth loops, or electrostatic discharge (ESD).

The H11AA814S is a type of optoisolator that specifically falls under the category of transistor, photovoltaic output. In particular, the H11AA814S features a photocoupler consisting of an infrared LED optically coupled to a photosensitive IC. With 4V minimum DC input voltage and 8V maximum DC input voltage, the device’s transistor output is dedicated for driving PNP circuits. Furthermore, its highly sensitive transistor output detector has a 6 kV minimum breakdown voltage to ensure high-reliability noise isolation.

The optoisolator’s wide operating temperature range of -55°C to 125°C allows for use in a variety of applications such as communications systems, industrial equipment, and medical devices. Moreover, the H11AA814S includes photocoupler and transistor structures in its wide package line-up, designed to facilitate customization and reduce mounting space.

The H11AA814S usually operates based on either the image-sensing or photocurrent principles. In the image-sensing principle, light emitted by the LED is received by the photodetector as an image generated on the surface of the photodetector. This type of operation is useful in applications that require high-speed response and low signal isolation capability due to the quicker signal transmit times. Conversely, the photocurrent principle involves light entering the photodetector directly, producing photocurrent signals that are transmitted by transistors. This is the principle used for long transmission distances and high signal isolation characteristics.

In brief, the H11AA814S is an optoisolator designed as a transistor, photovoltaic output. This device provides noise isolation in the range of up to 1000V RMS and supports both image-sensing and photocurrent principles. Furthermore, its wide operating temperature range of -55°C to 125°C enables it to be used in a variety of applications, with its specialized package line-up designed to reduce mounting space and improve customization.

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