Vitaliy wrote: > Yeah, it's great that you don't need external caps for charge pumps, > but you end up overpaying $8 per IC compared to, say, MAX221. Is it > really worth it? Since this is one-off and he's getting the samples for free, probably yes. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist