Return-Path: Received: (qmail 27272 invoked from network); 3 Jun 2003 07:47:58 -0000 Received: from warrior.services.quay.plus.net (212.159.14.227) by mailstore with SMTP; 3 Jun 2003 07:47:58 -0000 Received: (qmail 10207 invoked from network); 3 Jun 2003 07:47:57 -0000 X-MSMail-Priority: High Received: from post.thorcom.com (193.82.116.70) by warrior.services.quay.plus.net with SMTP; 3 Jun 2003 07:47:57 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.14) id 19N6Uq-0000hb-H1 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 03 Jun 2003 08:46:16 +0100 Received: from [212.1.130.143] (helo=smtp-1.visp.telinco.net) by post.thorcom.com with esmtp (Exim 4.14) id 19N6Um-0000hS-B3 for rsgb_lf_group@blacksheep.org; Tue, 03 Jun 2003 08:46:12 +0100 Received: from [80.40.88.107] (helo=standalone) by smtp-1.visp.telinco.net with smtp (Exim 3.36 #1) id 19N6Ul-0007hy-00 for rsgb_lf_group@blacksheep.org; Tue, 03 Jun 2003 08:46:11 +0100 Received: by localhost with Microsoft MAPI; Tue, 3 Jun 2003 08:46:04 +0100 Message-ID: <01C329AC.912C7730.g4jnt@thersgb.net> From: "Andy talbot" To: rsgb_lf_group@blacksheep.org Date: Tue, 3 Jun 2003 08:46:03 +0100 Importance: high X-Priority: 1 X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211 MIME-Version: 1.0 Subject: LF: RE: 4060 Divider Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=2.0 required=5.0tests=X_PRIORITY_HIGHversion=2.53 X-Spam-Level: ** X-Spam-Checker-Version: SpamAssassin 2.53 (1.174.2.15-2003-03-30-exp) X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false I sucessfully use 74HC and 74HCT familty to at least 30 - 40MHz. It can often be pushed to just above 50MHz. If you want to got faster, the 74ACT family can be used as buffers to beyond 100MHz, but counters and shift registers in that technology don't seem to go much beyond 80MHz in my experience Andy g4JNT -----Original Message----- From: Steve McDonald [SMTP:jsm@gulfislands.com] Sent: 2003/06/02 19:18 To: rsgb_lf_group@blacksheep.org Subject: LF: 4060 Divider I would like to use the M74HC4060 as a 'divide-by-64' signal source. Can anyone tell me the upper limit for xtals that this chip can handle? My xtal will be on 8.750000; I fear that the upper limit may be around 4-6 MHz? Steve Visit the "THE VE7SL RADIO NOTEBOOK" at http://www.imagenisp.ca/jsm [L.F. Loop] [Tuna Tin DX] [H.F. Maritime DX] [Crystal Radio DXing] [136 kHz Band]