John Pearson wrote: > > ----- Original Message ----- > From: "Robert Rolf" > To: > Sent: Tuesday, September 02, 2003 5:21 PM > Subject: Re: 7404 in an 8 pin DIP? > > > Why not use a couple of transistors for the level translation/inversion? > > Could I do it with a couple 2n2222s, no resistors ( I am not very good with > analog electronics)? Yes and No. You do need some resistors to limit currents. http://www.hifi-remote.com/wasser/SerialCable.shtml You could get rid of the base resistors by using SMT logic level NFETs. Then you'd only need collector (drain) pullup resistors. R -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body