6N139-560E

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Optoisolators - Transistor, Photovoltaic Output - are widely used as an interface between two circuits that operate at different voltage levels. This isolation provides better protection against transient over voltages and improves circuit noise immunity. The 6N139-560E optoisolator is an excellent example of such a device. This application note will discuss its field of application and the working principle behind it.

The 6N139 is a photon-coupled non-inverting optoisolator. It is specifically designed for use as an AC coupling device, which adds noise immunity to data lines when data signals require isolation between two circuits operations at different voltage levels. This device provides an isolation barrier of up to 5000 volts and is designed to directly interface with TTL logic circuits. This makes it a great choice for use in a variety of applications, such as network and communication systems, medical equipment, industrial control systems, and consumer electronics.

The 6N139-560E consists of two separate units: an LED and a detector. The LED side of the optoisolator is driven by an external current source, which allows for fine-tuned adjustment of the LED brightness. The detector side consists of an internal PIN diode, an optically coupled integrated circuit, and an open-collector output transistor. The IC is optically coupled to the LED side of the chip, which allows the device to detect light emitted from the LED side and convert it into electrical pulses.

This optoisolator has a very fast response time supports both high and low data speeds. When the LED side of the chip is illuminated, it triggers the photodiode on the detector side, which generates an electrical signal. The signal is then digitized by the internal integrated circuit and is amplified by the open-collector output transistor. This output is typically connected to the logic side of the circuit and is used to control that side. The circuit remains isolated from the driver side, thus providing superior protection and noise immunity.

The 6N139-560E is designed to minimize power consumption and has an operating temperature range of -40°C to 100°C. It comes in a standard 6 pin DIP package and has a total power dissipation of 1.2 watts. It has an insulation distance of 8mm, min, and a current transfer ratio of 100%. Finally, the optoisolator has a lifetime of 25,000 hours, allowing it to work reliably for many years.

In summary, the 6N139-560E optoisolator is an ideal device for applications requiring isolation between two circuits operating at different voltage levels. It has a fast response time and operates reliably over a wide temperature range. The device comes in a standard 6 pin DIP package and provides up to 5000 volts of isolation between the logic and driver sides. This makes it an excellent choice for use in a variety of applications, such as network and communication systems, medical equipment, industrial control systems, and consumer electronics.

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