H11N3S

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Number of Channels:	1
Inputs - Side 1/Side 2:	1/0
Voltage - Isolation:	7500Vrms
Common Mode Transient Immunity (Min):	--
Input Type:	DC
Output Type:	Open Collector
Current - Output / Channel:	50mA
Data Rate:	5MHz
Propagation Delay tpLH / tpHL (Max):	330ns, 330ns
Rise / Fall Time (Typ):	--
Voltage - Forward (Vf) (Typ):	1.4V
Current - DC Forward (If) (Max):	10mA
Voltage - Supply:	--
Operating Temperature:	--
Mounting Type:	Surface Mount
Package / Case:	6-SMD, Gull Wing
Supplier Device Package:	6-SMD

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Optoisolators - Logic Output: H11N3S Application Field and Working Principle

Optoisolators are used in a variety of applications, and can be classified according to the type of their output. Optoisolators with digital logic outputs are known as logic outputs, and are often used for communication and/or control purposes. The H11N3S is an optoisolator with an electrical input that is controlled by an LED, and an output that is an open collector NPN transistor with a Schmitt trigger circuit.

Application Fields of H11N3S

The H11N3S optoisolator is suitable for a wide variety of applications. It is commonly used in isolation of logic circuits, protection of PLC I/O circuits, and motor control. Its common uses include the isolation of logic signals, the interface of data lines, the conversion of current or voltage levels, and the protection of sensitive circuit components from transients.The H11N3S can be used for both single-ended and differential signals, making it ideal for higher-speed applications requiring fast rise and fall times. It is also suitable for controlling several devices in parallel while isolating the controller from excessive currents. Additionally, the combination of the LED and the Schmitt trigger make it ideal for hysteresis applications, such as motor control and switching applications.

Working Principle of H11N3S

The H11N3S optoisolator works by using the impedance of the LED to turn on the NPN transistor output. The LED is activated by an electrical input signal such as a voltage, current, or digital logic level. When the electrical input exceeds the LED\'s threshold voltage or current, it is turned on, and the NPN transistor is subsequently turned on. The NPN transistor can then be used to control an output, such as a switch, relay, motor, or other device.When the LED is on, it generates a small current that is transferred to the NPN transistor\'s base. This current reaches a level at which it turns on the transistor, allowing the current flow. The second input of the Schmitt trigger circuit behaves as a clamp, limiting the maximum current of the transistor and thus protecting the output circuit from damage caused by overcurrent.

Conclusion

The H11N3S optoisolator is a versatile device with a wide range of applications. It can be used for both single-ended and differential signals, with fast rise and fall times that make it suitable for higher-speed applications. Additionally, it is suitable for hysteresis applications, such as motor control, and can provide protection from transients. Its working principle is based on the LED\'s impedance turning on the NPN transistor, and the use of a Schmitt trigger circuit to limit the current of the transistor.

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