A 74AC74 in SO-14 package mounted dead bug style will make a handy /4 that is
no bigger than most crystal oscillators.
If that's still too big, you can go with the TSSOP, but no coffee for you for a
week prior to soldering that baby :)
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-----Original Message-----
From: "Kevin Staley" <kevin.sta...@virgin.net>
Sender: time-nuts-boun...@febo.com
Date: Sun, 13 May 2012 17:27:20
To: 'Discussion of precise time and frequency measurement'<time-nuts@febo.com>
Reply-To: kevin.sta...@virgin.net,
Discussion of precise time and frequency measurement
<time-nuts@febo.com>
Subject: Re: [time-nuts] Shera Controller - U7
Hi all
Thanks for the many responses.
It would seem that U7 is pretty rare.
I think I will be going with a 24 MHz "Can oscillator" and a separate 6MHz
source for the PIC either divided from the 24MHz oscillator or a separate
oscillator.
Thanks again
Kevin
-----Original Message-----
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Chris Albertson
Sent: 13 May 2012 16:47
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Shera Controller - U7
On Sun, May 13, 2012 at 8:11 AM, J. L. Trantham <jlt...@att.net> wrote:
> It is an 8 pin DIP, 24 MHz oscillator with an onboard divide output in
> order to provide a dual output oscillator. It is an ECS-300CX-240 and
> DigiKey lists it as obsolete since 2009. They say 'call'.
Sounds like a you could use a normal 24MHz TTL can oscillator and a dual
flip flop mounted "dead bug" style.
Chris Albertson
Redondo Beach, California
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