The 0032 was an op-amp and the 0033 and 0063 a buffer. The 0063 was a high power/higher slew-rate version. They were, and still are, great to use. I do have some 0032s and 0033s. Never played with the 0063. 73 - Mike
Mike B. Feher, N4FS 89 Arnold Blvd. Howell, NJ, 07731 732-886-5960 -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bruce Griffiths Sent: Saturday, February 27, 2010 9:56 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Achieving maximum performance when driving 5370A/B inputs Mike Feher wrote: > In general, what about the old National "damn fast" and super damn fast" > LH0032& LH0033? I used to use a lot of those in my designs many years ago. > - Mike > > Mike B. Feher, N4FS > 89 Arnold Blvd. > Howell, NJ, 07731 > 732-886-5960 > The LH0032 was a fast FET input opamp. I presume you meant the LH0033 and LH0063? Their slew rate is adequate to ensure that the 5370A/B trigger jitter is insignificant. However they need a negative supply as well as the positive supply when being driven by a 3.3V or 5V CMOS output. Bruce _______________________________________________ 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.