Multiplexer
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Does anyone have any suggestions for what is a good multiplexer for
use with a BS2? I have a 4067B but I don't have it working yet,
meaning that I can sink B, C, D, /E, and pin 1 to ground, pulse A and
get no output from out 1. The idea is to control 65 to 65 solid state
relays from one BS2 using the multiplexers in 4 groups.
Chuck
use with a BS2? I have a 4067B but I don't have it working yet,
meaning that I can sink B, C, D, /E, and pin 1 to ground, pulse A and
get no output from out 1. The idea is to control 65 to 65 solid state
relays from one BS2 using the multiplexers in 4 groups.
Chuck
Comments
chuckdrew@y... writes:
> Does anyone have any suggestions for what is a good multiplexer for
> use with a BS2? I have a 4067B but I don't have it working yet,
> meaning that I can sink B, C, D, /E, and pin 1 to ground, pulse A and
> get no output from out 1. The idea is to control 65 to 65 solid state
> relays from one BS2 using the multiplexers in 4 groups.
>
Chuck, you can drive up to eight 595 shift registers with a BS2. That will
give you 64 outputs. I use the same system, and I have the 595s driving
ULN2803
8-channel Darlingtons, which will sink 500ma per channel.
Sid
[noparse][[/noparse]Non-text portions of this message have been removed]
to the BS2 is with the 74HC595 (serial-in/parallel-out shift register). It
takes just three lines (data, clock and latch) to control it and it can be
daisy-chained. I'm not sure that you can put eight in a chain, but it would
be worth looking into.
-- Jon Williams
-- Parallax
In a message dated 8/7/02 6:54:23 PM Central Daylight Time,
chuckdrew@y... writes:
> Does anyone have any suggestions for what is a good multiplexer for
> use with a BS2? I have a 4067B but I don't have it working yet,
> meaning that I can sink B, C, D, /E, and pin 1 to ground, pulse A and
> get no output from out 1. The idea is to control 65 to 65 solid state
>
[noparse][[/noparse]Non-text portions of this message have been removed]
serial-in/parallel-out shift registers with 32 outputs in a single
chip. Sorry I don't have part numbers, but if they can be daisy-chained,
would give you the 64 outputs with only two I.C.'s.
Have a look,
Tim
At 08:00 PM 8/7/2002 -0400, you wrote:
>It may be a bit simplistic ... but my favorite way to add a bunch of outputs
>to the BS2 is with the 74HC595 (serial-in/parallel-out shift register). It
>takes just three lines (data, clock and latch) to control it and it can be
>daisy-chained. I'm not sure that you can put eight in a chain, but it would
>be worth looking into.
>
>-- Jon Williams
>-- Parallax
>
>In a message dated 8/7/02 6:54:23 PM Central Daylight Time,
>chuckdrew@y... writes:
>
>
> > Does anyone have any suggestions for what is a good multiplexer for
> > use with a BS2? I have a 4067B but I don't have it working yet,
> > meaning that I can sink B, C, D, /E, and pin 1 to ground, pulse A and
> > get no output from out 1. The idea is to control 65 to 65 solid state
> >
>
>
>
>
>[noparse][[/noparse]Non-text portions of this message have been removed]
>
>
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Timothy Medema
CrystaLite, Incorporated
3307 Cedar St. (425) 745-6000 800-666-6065
Everett, WA 98201 Fax: (425) 257-0232
www.crystaliteinc.com
<mailto:timm@c...>timm@c...
The information transmitted is intended only for the person or entity to
whom it is addressed and may contain confidential and/or privileged
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On Thursday 08 August 2002 11:04 am, you wrote:
> Also, Allegro MicroSystems www.allegromicro.com has
> serial-in/parallel-out shift registers with 32 outputs in a single
> chip. Sorry I don't have part numbers, but if they can be daisy-chained,
> would give you the 64 outputs with only two I.C.'s.
>
> Have a look,
>
> Tim
>
> At 08:00 PM 8/7/2002 -0400, you wrote:
> >It may be a bit simplistic ... but my favorite way to add a bunch of
> > outputs to the BS2 is with the 74HC595 (serial-in/parallel-out shift
> > register). It takes just three lines (data, clock and latch) to control
> > it and it can be daisy-chained. I'm not sure that you can put eight in a
> > chain, but it would be worth looking into.
> >
> >-- Jon Williams
> >-- Parallax
> >
> >In a message dated 8/7/02 6:54:23 PM Central Daylight Time,
> >
> >chuckdrew@y... writes:
> > > Does anyone have any suggestions for what is a good multiplexer for
> > > use with a BS2? I have a 4067B but I don't have it working yet,
> > > meaning that I can sink B, C, D, /E, and pin 1 to ground, pulse A and
> > > get no output from out 1. The idea is to control 65 to 65 solid state
> >
> >[noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> >To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> >from the same email address that you subscribed. Text in the Subject and
> >Body of the message will be ignored.
> >
> >
> >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
> Timothy Medema
> CrystaLite, Incorporated
> 3307 Cedar St. (425) 745-6000 800-666-6065
> Everett, WA 98201 Fax: (425) 257-0232
>
> www.crystaliteinc.com
> <mailto:timm@c...>timm@c...
>
>
> The information transmitted is intended only for the person or entity to
> whom it is addressed and may contain confidential and/or privileged
> material. Any review, retransmission, dissemination or other use of, or
> taking of any action in reliance upon, this information by persons or
> entities other than the intended recipient is prohibited. If you received
> this in error, please contact the sender and delete the material from any
> computer.
>
>
> To UNSUBSCRIBE, just send mail to:
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--
Registered Linux user #223705
Give me ambiguity or give me something else.
ones who responded to my question. Now, moving on,
I was able to finally get the 4067b multiplexer
working
and I picked up a 74HC595 and tried the experiment
from the Stampworks book with success also. My
questions is, if a daisy chain multiple IC's together,
how do I address the out puts individually, say, to
turn on output 2 on the second chip? This one has me
kinda stumped!
Chuck
--- jonwms@a... wrote:
> It may be a bit simplistic ... but my favorite way
> to add a bunch of outputs
> to the BS2 is with the 74HC595
> (serial-in/parallel-out shift register). It
> takes just three lines (data, clock and latch) to
> control it and it can be
> daisy-chained. I'm not sure that you can put eight
> in a chain, but it would
> be worth looking into.
>
> -- Jon Williams
> -- Parallax
>
> In a message dated 8/7/02 6:54:23 PM Central
> Daylight Time,
> chuckdrew@y... writes:
>
>
> > Does anyone have any suggestions for what is a
> good multiplexer for
> > use with a BS2? I have a 4067B but I don't have it
> working yet,
> > meaning that I can sink B, C, D, /E, and pin 1 to
> ground, pulse A and
> > get no output from out 1. The idea is to control
> 65 to 65 solid state
> >
>
>
>
>
> [noparse][[/noparse]Non-text portions of this message have been
> removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed.
> Text in the Subject and Body of the message will be
> ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
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chuckdrew@y... writes:
> and I picked up a 74HC595 and tried the experiment
> from the Stampworks book with success also. My
> questions is, if a daisy chain multiple IC's together,
> how do I address the out puts individually, say, to
> turn on output 2 on the second chip? This one has me
> kinda stumped!
>
>
Tie all the clock and latch lines together. Shiftout all your data - one
byte per 595 - to the first 595 in the string then pulse the latch.
Allegro has a 32-bit shift register - A6818SA.
Sid
[noparse][[/noparse]Non-text portions of this message have been removed]