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Discussion Groups | Comp.Arch.Embedded | Two quick RS-485 questions
There are 33 messages in this thread.
You are currently looking at messages 20 to 30.
Re: Two quick RS-485 questions - Spehro Pefhany - 19:56 03-05-04
On Mon, 03 May 2004 19:05:01 -0400, the renowned Joe Legris <j...@xympatico.ca> wrote: >John Devereux wrote: > >> >> Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, ~ $0.20 >> each / 100. >> > >Where do you get new ones for that price? Cheapest I have seen is double >that. Digikey has the TI ones for 0.21 in 500, should be possible to do better. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" s...@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Re: Two quick RS-485 questions - Lewin A.R.W. Edwards - 08:23 04-05-04
> > > BTW, the driver/receiver I'm using is the SN75LBC179P, which is $1.26 > > > > That is indeed cheaper than the Maxim counterpart. > > Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, ~ $0.20 There is some reason why I chose this particular part, but I didn't make a note of it. (I have a half-page of scratch paper with part numbers on it, most of which are crossed out). Well, anyhoo, I'm about $30 per unit under budget for the entire appliance, which is great heaping bowls full of meaty gravy, and there is much rejoicing.
Re: Two quick RS-485 questions - Joe Legris - 08:24 04-05-04
Spehro Pefhany wrote: > On Mon, 03 May 2004 19:05:01 -0400, the renowned Joe Legris > <j...@xympatico.ca> wrote: > > >>John Devereux wrote: >> >> >>>Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, ~ $0.20 >>>each / 100. >>> >> >>Where do you get new ones for that price? Cheapest I have seen is double >>that. > > > Digikey has the TI ones for 0.21 in 500, should be possible to do > better. > > Best regards, > Spehro Pefhany But in qty 100 they're 38 cents each. -- Joe Legris
Re: Two quick RS-485 questions - Spehro Pefhany - 09:29 04-05-04
On Tue, 04 May 2004 08:24:41 -0400, the renowned Joe Legris <j...@xympatico.ca> wrote: >Spehro Pefhany wrote: >> On Mon, 03 May 2004 19:05:01 -0400, the renowned Joe Legris >> <j...@xympatico.ca> wrote: >> >> >>>John Devereux wrote: >>> >>> >>>>Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, ~ $0.20 >>>>each / 100. >>>> >>> >>>Where do you get new ones for that price? Cheapest I have seen is double >>>that. >> >> >> Digikey has the TI ones for 0.21 in 500, should be possible to do >> better. >> >> Best regards, >> Spehro Pefhany > >But in qty 100 they're 38 cents each. Or maybe they are 0.21 each with a $17 line-item nuisance charge. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" s...@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Re: Two quick RS-485 questions - 14:12 04-05-04
Joe Legris <j...@xympatico.ca> writes: > John Devereux wrote: > > > Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, > > ~ $0.20 > > each / 100. > > > > Where do you get new ones for that price? Cheapest I have seen is > double that. EBV / Avnet in UK for SN75176AD / 150 pcs. Future in Canada for DS75176BM / 95 pcs. This was in late 2003, so I suppose prices might have changed a bit. -- John Devereux
Re: Two quick RS-485 questions - Spehro Pefhany - 14:20 04-05-04
On 04 May 2004 19:12:43 +0100, the renowned John Devereux <j...@devereux.me.uk> wrote: >Joe Legris <j...@xympatico.ca> writes: > >> John Devereux wrote: >> >> > Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, >> > ~ $0.20 >> > each / 100. >> > >> >> Where do you get new ones for that price? Cheapest I have seen is >> double that. > >EBV / Avnet in UK for SN75176AD / 150 pcs. >Future in Canada for DS75176BM / 95 pcs. > >This was in late 2003, so I suppose prices might have changed a bit. FAI's web site price is about triple that. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" s...@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Re: Two quick RS-485 questions - 17:35 04-05-04
Spehro Pefhany <s...@interlogDOTyou.knowwhat> writes: > On 04 May 2004 19:12:43 +0100, the renowned John Devereux > <j...@devereux.me.uk> wrote: > > >Joe Legris <j...@xympatico.ca> writes: > > > >> John Devereux wrote: > >> > >> > Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, > >> > ~ $0.20 > >> > each / 100. > >> > > >> > >> Where do you get new ones for that price? Cheapest I have seen is > >> double that. > > > >EBV / Avnet in UK for SN75176AD / 150 pcs. > >Future in Canada for DS75176BM / 95 pcs. > > > >This was in late 2003, so I suppose prices might have changed a bit. > > FAI's web site price is about triple that. Really? Well, this wasn't off the web site, it was a direct quote. Perhaps there was a glut of them at that time. -- John Devereux
Re: Two quick RS-485 questions - Spehro Pefhany - 17:49 04-05-04
On 04 May 2004 22:35:52 +0100, the renowned John Devereux <j...@devereux.me.uk> wrote: >Spehro Pefhany <s...@interlogDOTyou.knowwhat> writes: > >> On 04 May 2004 19:12:43 +0100, the renowned John Devereux >> <j...@devereux.me.uk> wrote: >> >> >Joe Legris <j...@xympatico.ca> writes: >> > >> >> John Devereux wrote: >> >> >> >> > Cheapest is probably a generic 75176, e.g. DS75176BM or SN75176AD, >> >> > ~ $0.20 >> >> > each / 100. >> >> > >> >> >> >> Where do you get new ones for that price? Cheapest I have seen is >> >> double that. >> > >> >EBV / Avnet in UK for SN75176AD / 150 pcs. >> >Future in Canada for DS75176BM / 95 pcs. >> > >> >This was in late 2003, so I suppose prices might have changed a bit. >> >> FAI's web site price is about triple that. > >Really? Well, this wasn't off the web site, it was a direct quote. Perhaps >there was a glut of them at that time. Web site prices tend to be on the high side compared to distributor quotes in combination with other stuff (juicy total order size), at least in my experience. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" s...@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
RS-232 question - Joe Legris - 18:04 06-05-04
While were talking about prices, what's the best choice (i.e. cheap) for a MAX232 equivalent that the uses 0.1 uF caps? Thanks, Joe Legris
Re: RS-232 question - Geir Frode Raanes Sørensen - 05:35 07-05-04
Joe Legris <j...@xympatico.ca> wrote: : While were talking about prices, what's the best choice (i.e. cheap) for : a MAX232 equivalent that the uses 0.1 uF caps? ST232 ? (SGS Thomson, www.st.com) -- ****************************************************** Never ever underestimate the power of human stupidity. -Robert Anson Heinlein G...@INVALID.and.so.forth ******************************************************