Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-df03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 59A6E3800009F; Thu, 2 May 2013 20:25:45 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1UY3nj-0006eW-HP for rs_out_1@blacksheep.org; Fri, 03 May 2013 01:24:39 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1UY3ni-0006eN-Ou for rsgb_lf_group@blacksheep.org; Fri, 03 May 2013 01:24:38 +0100 Received: from nm8-vm7.bt.bullet.mail.ir2.yahoo.com ([212.82.99.231]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1UY3ng-0001hk-NU for rsgb_lf_group@blacksheep.org; Fri, 03 May 2013 01:24:37 +0100 Received: from [212.82.98.42] by nm8.bt.bullet.mail.ir2.yahoo.com with NNFMP; 03 May 2013 00:24:15 -0000 Received: from [46.228.39.186] by tm3.bt.bullet.mail.ir2.yahoo.com with NNFMP; 03 May 2013 00:24:15 -0000 Received: from [127.0.0.1] by smtp127.bt.mail.ir2.yahoo.com with NNFMP; 03 May 2013 00:24:15 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btinternet.com; s=s1024; t=1367540655; bh=MvvBFSSoL2HNCZYWmp7SpwG4rhH74043xO5p7KY/SKA=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE:X-Antivirus:X-Antivirus-Status; b=j/XG34wvVHINi13TJDKPbfcMVskZg1kjunEHQr7ngwZAS/jlYb7GDYd6UzFRx+5d/mYHCSX35x12T58bzBkkeHcBmalGcMfUkiSJb1kUtyyGvs6ujan/jeUUajfWCrGUNw0JVfprQ9DtoCLiX1cBpottaZxgonFRvtBAKVfIw6I= X-Yahoo-Newman-Id: 248097.3631.bm@smtp127.bt.mail.ir2.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: 74srsi4VM1n2fLICvtmKozmBVos0aBbrx3UOZouuYB_qA_j ISmhz_k5.UjVV_x7tT4N_vhzK0BuKcPHmPTtiHojU1Y4ezKZ_TLKGlfcS.N. eUWD1lOUWPPple9GY1tKgRWTRp.khs82mPEQiQYgzpTm.1EebZ7ORD86fm6O CsYOnv8Ve4EWrwHXrCHpGm4HYQL1.rXsA958Vcu_HCwBUk5BAZxkzNOYvfqj i713Yc5N0hsfL_dz4tVbg5ZnDx.L4HaPZcURcOKt9d.3CeRnEJH6gdpvAX7D SULFcQsdyPF7UZTKOGWA3UElG7ydfQp2gqW83u6J60J0uDdAUtr5TKiSKfU3 Q1pJD4ssgArMmqEV8xPsmWVPakafphrViYlOWDcKz_gT9XpFRzFBGOP1PAug qvAIZuzDmOQDt9oeDDrzwyY0q.akmpi06uDqkmpc4tmnoyobXF1t6yRapeSm _4BfMehHM6H2d X-Yahoo-SMTP: fpz.2VeswBBs59bVshRPmMN51lcO2lgFRIvE4XTqE8dRwOxd70E- X-Rocket-Received: from gnat (alan.melia@86.167.13.182 with login) by smtp127.bt.mail.ir2.yahoo.com with SMTP; 03 May 2013 00:24:15 +0000 UTC Message-ID: From: "Alan Melia" To: References: <07C35397E99A4E36ACAD6EECB24B07D3@gnat> Date: Fri, 3 May 2013 01:24:15 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-Antivirus: avast! (VPS 130502-0, 02/05/2013), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Graham yes ,in that situation I would say that's probably ok. It sounds like the A stage FF has died. There is probably more drive available from the "S" version. It will load the driving stage a bit more heavilly but you probably do not have a high fan-out. i.e.the stage driving the 196 is only driving the 196? or maybe one other gate input? [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [212.82.99.231 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: eb65b97b00a71049be1fa526941c7b31 Subject: Re: LF: Re: 74LS196N 74S196N Difference ?? L or LS Content-Type: multipart/alternative; boundary="----=_NextPart_000_0073_01CE479C.ECC27400" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.1 required=5.0 tests=FORGED_MUA_OUTLOOK,HTML_40_50, HTML_MESSAGE autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mtain-df03.r1000.mx.aol.com ; domain : btinternet.com DKIM : pass x-aol-sid: 3039ac1d40d751830408669f X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0073_01CE479C.ECC27400 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Graham yes ,in that situation I would say that's probably ok. It = sounds like the A stage FF has died. There is probably more drive = available from the "S" version. It will load the driving stage a bit = more heavilly but you probably do not have a high fan-out. i.e.the stage = driving the 196 is only driving the 196? or maybe one other gate input? Alan=20 ----- Original Message -----=20 From: Graham=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Friday, May 03, 2013 12:43 AM Subject: Re: LF: Re: 74LS196N 74S196N Difference ?? L or LS Tnx Allan Yes that makes sense , the chip that's decided to double the = frequency to the phase comparator from 500 Hz sq wave to 1 = Khz 1:5 pulse train ...... thereby ending the gb4fpr 472.5 = session ....... is a 74LS196N =20 I have have a few 74S196N in the spares box , should be ok = as replacement ? 73 -G. From: Alan Melia=20 Sent: Thursday, May 02, 2013 11:13 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Re: 74LS196N 74S196N Difference ?? L or LS The S is fast schottky logic and will pull more current per chip than = LS or TTL and will probably be slightly faster (I think without getting = the spec sheets out) LS draws less current than standard TTL but is as = fast or in some cases slightly faster. The functionality is of cource = exactly the same. LS will probably replace any standard TTL logic though = it depends on the quality of the design to be sure that you dont get = timing or race problems. Alan G3NYK=20 ----- Original Message -----=20 From: Graham=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, May 02, 2013 10:45 PM Subject: LF: 74LS196N 74S196N Difference ?? L or LS 74LS196N 74S196N Difference ?? L or LS divider chip=20 What is the difference anyone ?? Tnx -G. ------=_NextPart_000_0073_01CE479C.ECC27400 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Graham yes ,in that situation I = would say that's=20 probably ok. It sounds like the A stage FF has died. There is probably = more=20 drive available from the "S" version. It will load the driving stage a = bit more=20 heavilly but you probably do not have a high fan-out. i.e.the stage = driving the=20 196 is only driving the 196? or maybe one other gate input?
 
Alan 
----- Original Message -----
From:=20 Graham
Sent: Friday, May 03, 2013 = 12:43 AM
Subject: Re: LF: Re: 74LS196N = 74S196N=20 Difference ?? L or LS

Tnx Allan
 
Yes that  makes sense  ,  the  chip = that's =20 decided  to   double the  frequency to the  = phase=20 comparator   from   500  Hz    = sq =20 wave to   1 Khz   1:5  pulse train  = ......=20 thereby    ending  the   = gb4fpr  =20 472.5  session  .......   is  a  = 74LS196N =20
 
I have  have  a few  =20 74S196N   in = the   spares box=20 , should  be ok  as  replacement ?
 
73 -G.

From: Alan Melia
Sent: Thursday, May 02, 2013 11:13 PM
Subject: LF: Re: 74LS196N 74S196N Difference ?? L or=20 LS

The S is fast schottky logic and will = pull more=20 current per chip than LS or TTL and will probably be slightly = faster (I=20 think without getting the spec sheets out)  LS draws less current = than=20 standard TTL but is as fast or in some cases slightly faster. The=20 functionality is of cource exactly the same. LS will probably replace = any=20 standard TTL logic though it depends on the quality of the design to = be sure=20 that you dont get timing or race problems.
 
Alan
G3NYK 
----- Original Message -----
From:=20 Graham
To: rsgb_lf_group@blacksheep.org= =20
Sent: Thursday, May 02, 2013 = 10:45=20 PM
Subject: LF: 74LS196N 74S196N = Difference ?? L or LS

74LS196N    74S196N  Difference  ?? L = or =20 LS     divider   chip
 
What is the  difference  anyone  ??
 
 
 
Tnx -G.
 
  
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