Find what value of current limiting resistor is required

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Reference no: EM13271634

An LED is connected to a 74LS244 in an active-LOW configuration. The key parameters for the 74Ls244 are IOH=-15 mA, IOL=20 mA, VOH =2.0V and Vol=0.5V. The LED has a voltage drop of 2.0V and an operating current of 15 mA. What value of current limiting resistor is required?

Reference no: EM13271634

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