H11L3SR2VM Isolators

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An optoisolator, also known as an optocoupler, optical isolator, or photocoupler, is a semiconductor device used to transfer electrical signals between two isolated circuits through light streams. The H11L3SR2VM is an optoisolator from the Logic Output family, and this article will provide an in-depth look at its application field and working principle.

Optoisolators from the Logic Output family such as the H11L3SR2VM use optical input signals to control a logic level output, with the goal of keeping the two circuits electrically isolated from each other. This device’s logic output is sinking and its configuration is SPDT (Single Pole Double Throw). It’s switching capacity is 50 mA with a voltage rating of 20 VDC.

The H11L3SR2VM can be used in a variety of fields, such as:

• I/O interface applications
• Industrial automation
• Domotics applications
• Lighting control and security systems
• Building automation
• LED lighting drivers

This device can also be used in the home, such as with remote controls, garage and door openers, and battery-operated wireless alarms and doorbells. It can also be utilized as a high-accuracy level shift, as well as a chip-to-chip or board-to-board interface.

Now, let’s take a closer look at how the H11L3SR2VM optoisolator works. This device is typically used in an ON/OFF complementary output configuration. It utilizes an optically coupled light emitting diode (LED) and phototransistor. When the output and operating power supplies are switched OFF, the output of the optoisolator is in its low state.

When an input signal is applied, the LED within the optoisolator will turn ON and subsequently light the phototransistor. This will cause the output of the optoisolator to transition to its high state. The output of the device will remain in the high state until power is removed from the device or the output voltage is pulled below the device’s switching threshold. With the H11L3SR2VM, this switching threshold is typically 350 microamperes.

The H11L3SR2VM optoisolator also has an onboard reverse polarity protection circuit, protecting against any damage that may be caused by incorrectly connected power supplies on the input side. Thisoptoisolator is also RoHS and REACH compliant, making it a great choice for any application requiring protection from hazardous elements.

The H11L3SR2VM is capable of providing excellent electrical isolation between two circuits while also being able to control logic levels. It’s suitable for many applications, and its reverse polarity and environmental protection circuits make it a great choice for isolating and controlling logic levels.

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