Contrary to what some of you people think, the IC is not just unreliable but totally damaged. The output is constantly high no matter what. Also, the IC goes on getting hot towards a point your hand will burn touching it. Only misbehave I did was to reverse the supply voltage (12 V) for a moment. Also, I don't think Its such a cheap IC here, A pair costs about 30 Rs, Comparable to what a average lunch costs. What I mean is I can't just throw it away if I suspect it, I need to confirm it.