H11L3M Isolators

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Optoisolators - Logic Output are components used in digital circuits to provide electrical isolation between input and output systems. The most common type of optoisolator used in this application is the H11L3M. A typical application of this device is to isolate digital logic from voltage and current disturbances in other parts of the circuit, making it more reliable and stable.

H11L3M Overview

The H11L3M is an optoisolator optical coupler containing a GaAlAs infrared emitting diode and a photo IC. It is used to isolate low power electrical signals, such as microprocessor or TTL interfaces. It is also used to isolate analog signals from digital circuits, such as potentiometers or switches.

H11L3M Features

The H11L3M features a voltage type output, optocoupler isolation, an LED input, and a photo diode output. It has a transfer efficiency of between 20 to 600mA, depending on the LED drive current. It has a common-mode transient immunity of between 500V/µs (min) and 6000V/µs (max) depending on the LED drive current and temperature.

H11L3M Application Field

The H11L3M optoisolator can be used in a wide range of applications, including computer logic and micro-controller based control circuitry, communication systems, and industrial equipment. It is especially suitable for applications involving ground loops, voltage spikes, and electrostatic discharges. It is also useful for protecting low power signals from high power, high voltage, and electro-magnetic interference.

H11L3M Working Principle

The H11L3M optoisolator works by using infrared light as a means to isolate electrical signals. An infrared emitting diode (LED) is used to create an optical signal that is detected by a photo IC. The photo IC then converts the optical signal into an electrical signal. This is then used to control the operation of the circuit. By using optoisolation, the electrical signals can be isolated from voltage and current disturbances in other parts of the circuit.

Conclusion

The H11L3M is a versatile optoisolator with a wide range of applications. It is used to isolate digital logic from voltage and current disturbances in other parts of the circuit, making it more reliable and stable. Its features include a voltage type output, optocoupler isolation, an LED input, and a photo diode output. It works by using infrared light as a means to isolate electrical signals, and thus provides excellent electrical isolation for a wide range of applications.

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