>> Curious if anyone has abused 74AC series logic in a way I am suggesting. The BEAM Robotics people abuse all sorts of logic families, and generally r= ecommend AC logic as being able to provide high driver currents for motor d= rivers, while recommending HC logic for slightly lower power consumption in= "logic" circuits. http://www.beam-wiki.org/wiki/74HC/HCT_vs.74AC/ACT BillW --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .