Try this... http://mwd.ee.qub.ac.uk/DataSheet/Down_Load/4000%20CMOS%20Series/4049,%20405 0%20-%20HEX%20Buffer.pdf Compare with this... http://mwd.ee.qub.ac.uk/DataSheet/Down_Load/74%20TTL%20Series/7407.PDF Rest of determination will be based on the circuit you are implementing. Cheers, -Neil. ----- Original Message ----- From: "Bill Brooks" To: Sent: Monday, March 11, 2002 6:58 PM Subject: [EE]: Beginner Question Concerning 7407 > I'm hooking up a circuit that calls for a 7407 hex buffer (open collector). > I have a few 4050 chips, which are supposed to be similar, but after much > google searching, cannot determine if they are open-collector or not. Can > anyone help me out, and is there an easy way to determine this? > > Please pardon my ignorance... > > Bill. > > -- > http://www.piclist.com#nomail Going offline? Don't AutoReply us! > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body > > > -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body