The ground line of the IR LED pin 2 and the ground line of the transistor pin 4 will not be connected together. There pull-up resistor 1K acts as a load resistor. The Emitter pin 4 is grounded. 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. The output will not get high as soon as the input logic is made low and vice versa.

Iso 17712

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This paper yields a glossy finish and exceptionally right color, giving your images the look and feel of a traditional photograph. Place the document face-down on the platen, and select Document Type. Register your Canon product. The Product is warranted against defects in materials and workmanship under normal use and service a for a period of one 1 year from the date of original purchase when delivered to you in new condition in its original container or b for 1 year from the date of original purchase for refurbished Products. Join Date Sep Beans