Hi Dick: It's U9 listed in the IC table at: http://www.prc68.com/I/ThunderBolt.shtml#IC
which you can also see in the lower left corner the board drawing at: http://www.prc68.com/I/ThunderBolt.shtml#Dwg This is a pdf drawing so you can use the "+" button a number of times. Have Fun, Brooke Clarke http://www.prc68.com Richard W. Solomon wrote: > Where does one find this chip ? Those little letters are hard to read !! > > 73, Dick, W1KSZ > > -----Original Message----- >> From: Mark Sims <[email protected]> >> Sent: Feb 8, 2009 1:00 PM >> To: [email protected] >> Subject: [time-nuts] Thunderbolt disciplining process >> >> >> The tbolt uses the DS1620S chip in the SOIC-8 package. The DIP package has >> quite a bit of thermal mass and would probably not work as well. The chip >> revision is the last two characters of the date code line (second line on >> the SOIC chips). I am looking for a rev D chip. >> >> ------------------ >> >> What package? I may have a '1620 sample in my junk box from back >> when they were still Dallas Semi. >> >> >> >> _________________________________________________________________ >> Windows LiveT: Keep your life in sync. >> http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t1_allup_explore_022009 >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
