Quote Originally Posted by Dave View Post
scalerobotics, WOW you pay $4.00 for an MAX-232.... You must be made of money...
No, mostly water really.

Thanks Dave, I guess I was using a Mercedes, when I could have used a Chevy.

A quick search of Digikey for MAX232 reveals the actual price of a Maxim MAX232 dip is $3.31 to $6.60 ( Unless you like the larger electrolytic caps). But, if you use an ST232C, instead of a MAX232, (after tax and a few capacitors), the cost is $1.25.

Either way, you will save some money and space on your board if you invert your coms and buy two resistors.