I have question about using MAX488E and MAX489E chips. I see from the data sheet that the outputs of drivers are short circuit protected and have thermal shutdown. Their driver can not be put in to High Z line. Is it correct to connect the driver outputs of several MAX488E to the same pair of lines? Why do MAX489E chips have a separate driver enable/disable line even though their driver outputs are also similar to those of MAX488E chips? Thanks in advance. Vetri -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu