I confirmed the pin out matches a 74s30 also. An S30 is TTL. Great pix to look at. So 12 V on a 5 V chip is indeed a smoker. Find out why there was 12 V. OK crazy talk I see a 1K resistor next to the VCC chip. Would anyone be crazy enough to use a dropping resistor from 12 V to get 5?? Really bad engineering and I don't actually believe they would. But if true a open 74s30 would indeed show 12 V on pin 14. Good luck. Paul WB8TSL
On Fri, Oct 28, 2016 at 12:48 PM, jimlux <[email protected]> wrote: > On 10/28/16 9:13 AM, Scott Stobbe wrote: > >> The OCXO82-59 datasheet lists 12V supply, 5V clock out, could also be a >> blown regulator in your ocxo, if it is indeed a 12v model. >> >> There you go..the design could use a 74S30 as a driver - it's fast, > fairly good drive, but runs off 5V. If the regulator is shorted, and you > put 12V on it, it will cook. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/m > ailman/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.
