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MCT2 and MCT2E are also available in white package by . MCT2E. MCT2E-M. MCT V. (IC = 16 mA, IF = 32 mA, TA = °C). Details, datasheet, quote on part number: MCT2E Collector-emitter saturation voltage Input-to-output internal resistance TEST CONDITIONS = 10 µA, IC =1. MCT2E ON Semiconductor / Fairchild Transistor Output Optocouplers DIP-6 PHOTO TRANS datasheet, inventory & pricing.

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IC MCT2E Optocouplers

There pull-up resistor 1K acts as a load resistor. But when the Logic input is made high, this high voltage should be a minimum of 1.

This will short the collector and emitter and hence the Logic Output voltage will become zero. The output will not get high as soon as the input logic is made low and vice versa. The Emitter pin 4 is grounded.

Then Pull high the collector pin of the transistor using a resistor here I have used 1K and connect the collector pin to the output of your desired logic circuit. Submitted by admin on 7 March The ground line of the IR LED pin 2 and the ground line of the transistor pin 4 vatasheet not be connected together. This way the logic input will be reflected at the logic output and still provides and isolation between the two.


This comes in very handy when you are trying to isolate a noisy signal from your digital electronics, so if you are looking for an IC to provide optical isolation in your circuit design then this IC might be the right choice for you.

IC MCT2E Optocouplers, datasheet and pin description.

The digital signal given to the IR LED will be reflected on the transistor but there will be no hard electrical connection between the two. This is where the isolation occurs. datasheef

In the Icc mode we will not be using the base pin pin 6 of the transistor; we just have to connect the anode pin of the IR LED pin 1 to the logic input which has to be isolated and the cathode pin 2 of the IR led to the ground.

This IC is used to provide electrical isolation mtc2e two circuits, one part of the circuit is connected to the IR LED and the other to Photo-transistor.


This is the logic output pin 6 Base B Base pin of the Transistor.

It is normally not used for transistor mode, but will be used in diode mode. When the IR led is powered the light from it falls on the transistor mcct2e it conducts.

Another important parameter to consider while using an Optocoupler, is the rise time tr and fall time tf. More details can be found at the MCT2E datasheet which is available for download at the end of this page.

MCT2E IC Pinout, Specifications, Equivalent, Working & Datasheet

The below waveform shows the time taken for the output to transit from one state to another. The complete working can also be understood form the GIF file above.

Out of which the Phototransistor mode is mostly used, so let us look at that mode first. Base pin of mcf2e Transistor. TL — Programmable Reference Voltage. Connected to isolated ground.