AVR-Chat

Ok, if you need help ask, right. I've been searching through spec. sheets all day and I'm getting dizzy-- looking for an "H-Bridge" chip to work from an AVR Butterfly that can switch 30 or 30+volts bidirectional DC, non inductive (not a motor), no PWM, very low amperage (0.05 mA to 2 mA), just a standard square wave + and -. Most of the specs. I've read require a minimum of 12 or sometimes 16v for the output. I would like the minimum under 7 or 6v or even down close to zero-- is there such an animal?. Can anyone pick a chip number off the top of their head that would be good for this or point me in the right direction-- I don't read spec. sheets very well? Keep looking, right?

Thanks,
J. Daniel