RTL was a VERY simple design. a 2 input NAND had 2 transistors and 3 resistors as I remember.
The main issue was lead attachment was the main failure mode in the epoxy-ceramic 8 lead packages. If you twisted a lead, the device died. -John ============== > I stand corrected. On reflection, I seem to remember a lower supply > voltage > on the RTL, although 3.6 doesn't ring a bell. Do remember that it was very > temperamental logic family. Used to get lots of catastrophic failures on > the > DMM product range (which I believe SD acquired from Fairchild). > > Rob > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Chuck Harris > Sent: 19 April 2010 5:57 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] lunatic fringe time standards > > DTL had essentially the same specs as TTL. It was an evolutionary step. > > RTL was a strange beast, and ran off of 3.6V. There is no inherent reason > that there couldn't have been multiple families that used different > supplies, > but I only remember the 3.6V variety. > > -Chuck Harris > > Rob Kimberley wrote: >> RTL and DTL used 5.0V. I used to service Systron-Donner kit back in the >> early 70's, and we had a bunch of RTL and DTL stuff. >> >> Rob K > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.