[time-nuts] Shera Controller - U7

[Kevin Staley]

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-bounces at febo.com [mailto:time-nuts-bounces at 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 <jltran at 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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