[time-nuts] Subs for obsolete chips in pictic

Bob Camp lists at rtty.us
Mon Dec 12 13:03:13 EST 2011


The part went "gone with the wind" right as the board was being released....


-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chris Albertson
Sent: Monday, December 12, 2011 12:42 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Subs for obsolete chips in pictic

On Mon, Dec 12, 2011 at 4:28 AM, Attila Kinali <attila at kinali.ch> wrote:
> On Sun, 11 Dec 2011 12:04:35 -0800
> Chris Albertson <albertson.chris at gmail.com> wrote:
>> It uses a few 74ACxxx locic family parts that are no longer made.
> This surprises me a bit. Do you have any references to EOL notices
> from the manufacturers?.....
> Other than that, check findchips.com.

Thanks.   The  findchips.com suggestion was good.  Seems the "74AC"
part really is not available but there is a "CD74ACxxx" part that
looks good.

The problem is, the PCB is already made so it is hard to adapt the
design to other parts.   If I were designing from scratch I'd only
select parts that were stocked in high volume by most distributers

Chris Albertson
Redondo Beach, California

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