I just started a new project were I need to power up some motors which draw 7.4v using an arduino. I chose the SN7544 motor driver which I haven't been having a hard time using in the past, however I a coming across some problems. When I first hooked it up, the motors just "buzzed" and refused to move, while the IC itself got incredibly hot. I checked my wiring, it was good according to this tutorial (http://itp.nyu.edu/physcomp/Labs/DCMotorControl). Upon further inspection with my multimeter I believe to have found the problem. One of the motor terminal pins gives out a solid 7.4v when pulled high, but the other, supposed to be ground, is hovering at around .5-.53 volts. Is this a broken chip? Or do I need to add a resistor somewhere? I'm still kinda new with electronics so I'm not sure what my next step is.