PC814X

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Optoisolators - Transistor, Photovoltaic Output enclose a light-emitting diode within a solid-state photovoltaic (SPV) diode, forming an optocoupler. The PC814x optocoupler from Vishay Semiconductor is widely used for protecting industrial control circuits from noise and for isolating low-power analog signals from high-power digital signal lines. Due to its low cost and high performance, the PC814x has found numerous applications in the industrial automation, motion control, and consumer electronics industries.

The PC814x utilizes an “SPV” material that is sensitive to electromagnetic interference (EMI). The SPV material forms an electrical barrier between the input and output circuits, providing electrical isolation and noise immunity between the two. The PC814x\'s SPV material has the advantage of low drive current, low output saturation voltage, high tolerance to EMI, and a wide frequency range. Furthermore, the PC814x is available in both single-channel and dual-channel versions, allowing it to be used for applications that require more than one output for various control circuits.

The PC814x uses an LED (Light Emitting Diode) for signal transmission. When the input voltage is high, the LED emits light that is then converted into an analog voltage by the SPV material. This voltage is then fed to the output. The LED\'s data transmission rate is limited by its response speed, but is still far faster than that of traditional transistor-based optocouplers. The output circuit can be either open or closed collector, depending on the desired application. The PC814x also offers protection from over-voltage and over-current conditions, which makes it suitable for use in applications such as motor control, high-speed signal transmission, and automated data acquisition.

The PC814x is typically used for protection against electrical noise and EMI and isolation of analog and logic signals. It can be used in both AC and DC applications. Typical applications include industrial controls, motion controllers, and consumer electronics. It is also used in various automotive applications, such as airbag controllers, electric window controls, and absolute position encoders. Additionally, it is widely used in light measurement, temperature acquisition, and moisture sensing.

The PC814x can be used in both single-channel and dual-channel applications. Its single-channel output is provided in open collector and totem-pole configurations. A single PC814x can support multiple inputs and outputs depending on the application. The PC814x can be used in both 5V and 12V applications. It is available in a variety of package sizes and configurations, including DIP, SOIC, SMT, and TSOP packages.

The PC814x has been designed for use in a wide range of applications and has proven to be an effective tool for signal isolation, noise immunity, and protection from over-voltage or over-current conditions. It has a wide frequency range, low drive current, low output saturation voltage, and good EMI tolerance. This makes it an ideal choice for use in industrial automation, motion control, temperature acquisition, light measurement, and automotive applications.

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