Newsgroups: comp.robotics
Path: brunix!news.Brown.EDU!agate!howland.reston.ans.net!news.moneng.mei.com!uwm.edu!linac!att!cbnews!wrb
From: wrb@cbnews.cb.att.com (wallace.r.blackburn)
Subject: Re: SGS-Thompson L293D
Organization: AT&T
Date: Tue, 16 Nov 1993 14:58:31 GMT
Message-ID: <CGLAxM.ED5@cbnews.cb.att.com>
References: <LcZycc4w165w@sys6626.bison.mb.ca> <0097599E.6EEADE60@vms.csd.mu.edu>
Lines: 45

In article <0097599E.6EEADE60@vms.csd.mu.edu> 2479papandri@vms.csd.mu.edu writes:
>In article <LcZycc4w165w@sys6626.bison.mb.ca>, mark@sys6626.bison.mb.ca (Mark Essenburg) writes:
>>I have been having some trouble sourcing these chips.  I can get them 
>>from Active (Future) here in Winnipeg, but they will only sell them in 
>>stupid quantities.
>
>real stupid, by the hundreds!!!
>
>>
>>Does anybody know of a cross referanced chip that will work, or does a 
>>mail order like digikey carry them?  Can I order Digikey parts from 
>>Canada on the toll free line?
>
>NATIONAL makes an exact replacement for the SGS L293D its part number LM18293
>and Digikey sells them for about $4.05 a pop! I think the Digikey number is
>LM18293-ND.
>

Welllll, the LM18293 is actually a replacement for the L293B.  The major
differences between the B and D are that the B can handle 1A instead of
600mA (good) and the B does NOT have built in protection diodes while the D
does (bad).  If you want to use your own protection diodes, then the
LM18293 is a good deal.  It handles more current and, hopefully, Digi-Key
has a bunch of them (hold on, I'll call real quick...they have 3000, price
drops to $1.93 at 100 pieces!).

>>
>>Any help is appreciated, I am completing a miniboard project and hope to 
>>fire it up soon.  If anybody has any advice or C routines that they have 
>>developed and wish to share, I would appreciate it.
>>
>>Thanks all.
>>mark
>
>Cheers!
>Tony P.
>Marquette Univeresity
>e-mail: 2479papandri@vms.csd.mu.edu
>


-- 
   Wally Blackburn		   Clinton-Gore - Socialist Leadership
   wrb@ccsitn.att.com			          for the 90s!
   Amateur Radio Station AA8DX
