I prefer CD4094 + CD4021 for this sort of application. Voltage range is 3 to 15V ;-) It's only the good stuff they don't make anymore (or so they say - I think that these chips will be around forever). Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist