Thanks Joe, Heading over to grab some data sheets. I don't have an mediate application to hand but have had to build R2R leaders in the past and bemoaned the number of pins wasted on it. I will grab a couple to play with. Cheers Chris --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .