AVR-Chat

Peter,

> I'm after a high side (source) low impedance driver for driving 
> multiplexed LEDs.  I'm after something like this (Allegro 6810)
> 
>   http://www.allegromicro.com/sf/6810/
> 
> .. but, a lower cost lower voltage source driver for 8 or more bits.

how about the good old 74HC595? serial->parallel latch?
http://www.semiconductors.philips.com/pip/74HC595.html
 
> I'm planning on using someone's source driver with the ST 16C596 
> constant current sink driver ..
>   http://www.st.com/stonline/books/ascii/docs/10154.htm

nice.
 
> Which has a fairly good price (but 12 week lead time!).

shame about the lead time, nice chip otherwise, very handy.

paul