Re: [time-nuts] 74AC logic differences between manufactures
Probably none, since Fairchild inherited that product line from National Semiconductor. Regards, Javier, EA1CRB El 13/07/2010 21:30, Stanley Reynolds escribió: Learning about the differences between families now know why a 74F is not a substitute for 74AC. But remembering something I read in Brooks Shera, W5OJM GPSDO notes "Take care about which 4046 chips you use for U1 and U3. The Phillips 74HCT4046 chips (formerly sold by Radio Shack) are fine. So are CD74HC4046 chips made by Harris or T.I. Do not use chips made by Fairchild and do not use CD4046 chips; both have a different design and will not work in this circuit." Does anyone know about any differences in Fairchild and National Semiconductor 74AC175PC ? Stanley ___ 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. -- Javier HerreroEMAIL: jherr...@hvsistemas.com HV Sistemas S.L. PHONE: +34 949 336 806 Los Charcones, 17 FAX: +34 949 336 792 19170 El Casar - Guadalajara - Spain WEB: http://www.hvsistemas.com ___ 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.
Re: [time-nuts] 74AC logic differences between manufactures
Hi Without plugging them into a board, you'll never really know which one is better. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Stanley Reynolds Sent: Tuesday, July 13, 2010 3:31 PM To: time-nuts@febo.com Subject: [time-nuts] 74AC logic differences between manufactures Learning about the differences between families now know why a 74F is not a substitute for 74AC. But remembering something I read in Brooks Shera, W5OJM GPSDO notes "Take care about which 4046 chips you use for U1 and U3. The Phillips 74HCT4046 chips (formerly sold by Radio Shack) are fine. So are CD74HC4046 chips made by Harris or T.I. Do not use chips made by Fairchild and do not use CD4046 chips; both have a different design and will not work in this circuit." Does anyone know about any differences in Fairchild and National Semiconductor 74AC175PC ? Stanley ___ 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] 74AC logic differences between manufactures
Learning about the differences between families now know why a 74F is not a substitute for 74AC. But remembering something I read in Brooks Shera, W5OJM GPSDO notes "Take care about which 4046 chips you use for U1 and U3. The Phillips 74HCT4046 chips (formerly sold by Radio Shack) are fine. So are CD74HC4046 chips made by Harris or T.I. Do not use chips made by Fairchild and do not use CD4046 chips; both have a different design and will not work in this circuit." Does anyone know about any differences in Fairchild and National Semiconductor 74AC175PC ? Stanley ___ 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.
