MOC5009SM

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Optoisolators – Logic Output are widely used in various applications, such as industrial, automation, and automotive. The MOC5009SM is a low-cost, single-channel, monolithic optoisolator which utilizes a gallium arsenide infrared LED detector and a silicon photovoltaic switch for interfacing digital logic circuits. This device is designed to meet UL as well as IEC-level ESD protection requirements. It is available in SMD packages, which makes it suitable for industrial and automotive applications.

The MOC5009SM has two main sections: the light emitter section and the transfer function section. In the light emitter section, an infrared LED is used to convert an electrical signal into light energy which allows the light to traverse the optocoupler’s insulating barrier. The transfer function section consists of a photovoltaic switch that converts the light energy into a voltage change. This voltage change is then used as an input to the logic output, thus providing electrical isolation between the input and the logic output.

The MOC5009SM is designed to provide high electrical isolation between the input and output portion of the device. It has an isolation voltage rated up to 10,000 volts and can withstand shot-to-shot transient spikes up to 25,000 volts. Additionally, it has an operational temperature range of -40ºC to +105ºC and a storage temperature range of -55ºC to +125ºC. It supports a logic switching frequency up to 100 kHz.

The primary applications for the MOC5009SM are in industrial and automotive systems that require isolation. It can be used in motor control circuits, position feedback sensing, and other applications that require isolation of the input and output signals. Additionally, it can be used in logic level shifting, pulse skipping, and light dimming applications. This device can also be used as an interface between arbitrary logic families, providing a fast response time of up to 10 microseconds.

The working principle of the MOC5009SM is based on the transfer of electrical energy from the input side to the output side through an insulating barrier. This barrier separates the input and output sides of the device, providing electrical isolation between the two. The principle is based on the principle of heat conduction, which utilizes the transfer of energy from the input side to the output side through the barrier and the silicon photovoltaic switch. The input signal is converted to light energy which is then converted to voltage change in the transfer function section, thus transferring the electrical energy from the input side to the output side.

In summary, the MOC5009SM is an optoisolator logic output device which utilizes a gallium arsenide infrared LED detector and a silicon photovoltaic switch for interfacing digital logic circuits. It is designed to provide high electrical isolation between the input and output portion of the device. The device can withstand shot-to-shot transient spikes up to 25,000 volts, and supports a logic switching frequency up to 100 kHz. The primary application of the MOC5009SM are in industrial and automotive systems that require isolation. Its working principle is based on the transfer of electrical energy from the input side to the output side through an insulating barrier.

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