I tried to find a L293D motor driver but I was able to find only the L293NE. What is the difference (even google could not tell me)?
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D = diode
L293D has output clamping diodes for inductive transient suppression while the L293NE does not. Since you're going to drive a motor you will want to use clamping diodes to avoid inductive spikes from the motor killing the output transistors in the chip.
If you can only find the L293NE you can add your own diodes. See the datasheet for how they are connected.
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