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I read RG Keens article on CMOS switching.
Almost fits my needs. Almost.
Basically where you have the CD4053 that he uses, it works as a 3PDT switch. I need a 7PDT switch (8PDT type would do, even a 6PDT would work).
I need this to be controlled via a stomp switch so I'm working off of RG's article and going with the CD4013 and a momentary switch to make things work. Unless I find a different solution.
I could probably get by with 2 CD4053's if need be but prefer a single chip solution.

A Maxim 4760 fills the bill but its only available in a UCSP or QFN packages.

Thanks for any input.

CodeMonk wrote:I read RG Keens article on CMOS switching.
Almost fits my needs. Almost.
Basically where you have the CD4053 that he uses, it works as a 3PDT switch. I need a 7PDT switch (8PDT type would do, even a 6PDT would work).
I need this to be controlled via a stomp switch so I'm working off of RG's article and going with the CD4013 and a momentary switch to make things work. Unless I find a different solution.
I could probably get by with 2 CD4053's if need be but prefer a single chip solution.

A Maxim 4760 fills the bill but its only available in a UCSP or QFN packages.

Thanks for any input.

How about the CD4066 Quad Bilateral Switch IC, or maybe two of them?........

DrNomis wrote:

CodeMonk wrote:I read RG Keens article on CMOS switching.
Almost fits my needs. Almost.
Basically where you have the CD4053 that he uses, it works as a 3PDT switch. I need a 7PDT switch (8PDT type would do, even a 6PDT would work).
I need this to be controlled via a stomp switch so I'm working off of RG's article and going with the CD4013 and a momentary switch to make things work. Unless I find a different solution.
I could probably get by with 2 CD4053's if need be but prefer a single chip solution.

A Maxim 4760 fills the bill but its only available in a UCSP or QFN packages.

Thanks for any input.

How about the CD4066 Quad Bilateral Switch IC, or maybe two of them?........

Almost..maybe
From the datasheet, It looks like an ON/OFF. I need ON/ON.
Unless I am mis-reading it. I have been looking at CMOS switching, for IC's, and all sorts of other tech docs, etc. for 14+ hours. I am a bit tired.

Kinda like:


In a nut shell, what I need it to activate, via stompswitch (momentary) is basically a DPDT (ON/ON) and a 5PDT (ON/OFF though ON/ON would be fine here).
Sort of like a DPDT stomp AND either connect or disconnect 5 wires with a single action.
1 of the 5 is for an LED so I could get by with 4 and use a millennium bypass.
Hope thats clear enough.

Thanks

CodeMonk wrote:

DrNomis wrote:

CodeMonk wrote:I read RG Keens article on CMOS switching.
Almost fits my needs. Almost.
Basically where you have the CD4053 that he uses, it works as a 3PDT switch. I need a 7PDT switch (8PDT type would do, even a 6PDT would work).
I need this to be controlled via a stomp switch so I'm working off of RG's article and going with the CD4013 and a momentary switch to make things work. Unless I find a different solution.
I could probably get by with 2 CD4053's if need be but prefer a single chip solution.

A Maxim 4760 fills the bill but its only available in a UCSP or QFN packages.

Thanks for any input.

How about the CD4066 Quad Bilateral Switch IC, or maybe two of them?........

Almost..maybe
From the datasheet, It looks like an ON/OFF. I need ON/ON.
Unless I am mis-reading it. I have been looking at CMOS switching, for IC's, and all sorts of other tech docs, etc. for 14+ hours. I am a bit tired.

In a nut shell, what I need it to activate, via stompswitch (momentary) is basically a DPDT (ON/ON) and a 5PDT (ON/OFF though ON/ON would be fine here).
Sort of like a DPDT stomp AND either connect or disconnect 5 wires with a single action.
1 of the 5 is for an LED so I could get by with 4 and use a millennium bypass.
Hope thats clear enough.

Thanks

No worries, I'll have a good look around and see what I can dig up for you mate....


I just had a thought, if you arrange things so that the outputs of two of the switches in a CD4066 are joined together, then alternately switch one on, and the other off, you would effectively get a switch functioning as per your diagram, but the downside is you'd probably need several CD4066 IC's....

DrNomis wrote:

CodeMonk wrote:

DrNomis wrote:

CodeMonk wrote:I read RG Keens article on CMOS switching.
Almost fits my needs. Almost.
Basically where you have the CD4053 that he uses, it works as a 3PDT switch. I need a 7PDT switch (8PDT type would do, even a 6PDT would work).
I need this to be controlled via a stomp switch so I'm working off of RG's article and going with the CD4013 and a momentary switch to make things work. Unless I find a different solution.
I could probably get by with 2 CD4053's if need be but prefer a single chip solution.

A Maxim 4760 fills the bill but its only available in a UCSP or QFN packages.

Thanks for any input.

How about the CD4066 Quad Bilateral Switch IC, or maybe two of them?........

Almost..maybe
From the datasheet, It looks like an ON/OFF. I need ON/ON.
Unless I am mis-reading it. I have been looking at CMOS switching, for IC's, and all sorts of other tech docs, etc. for 14+ hours. I am a bit tired.

In a nut shell, what I need it to activate, via stompswitch (momentary) is basically a DPDT (ON/ON) and a 5PDT (ON/OFF though ON/ON would be fine here).
Sort of like a DPDT stomp AND either connect or disconnect 5 wires with a single action.
1 of the 5 is for an LED so I could get by with 4 and use a millennium bypass.
Hope thats clear enough.

Thanks

No worries, I'll have a good look around and see what I can dig up for you mate....

Thanks.
I've been at this for far to many hours today/yesterday/etc. 9:30am here now. I may sleep soon.
And once I get this to work, it will all be posted somewhere here of course.

DrNomis wrote: I just had a thought, if you arrange things so that the outputs of two of the switches in a CD4066 are joined together, then alternately switch one on, and the other off, you would effectively get a switch functioning as per your diagram, but the downside is you'd probably need several CD4066 IC's....

If I get desperate, I can make it work with 2 or 3 CD4053's

CodeMonk wrote:

DrNomis wrote:

CodeMonk wrote:

DrNomis wrote:

CodeMonk wrote:I read RG Keens article on CMOS switching.
Almost fits my needs. Almost.
Basically where you have the CD4053 that he uses, it works as a 3PDT switch. I need a 7PDT switch (8PDT type would do, even a 6PDT would work).
I need this to be controlled via a stomp switch so I'm working off of RG's article and going with the CD4013 and a momentary switch to make things work. Unless I find a different solution.
I could probably get by with 2 CD4053's if need be but prefer a single chip solution.

A Maxim 4760 fills the bill but its only available in a UCSP or QFN packages.

Thanks for any input.

How about the CD4066 Quad Bilateral Switch IC, or maybe two of them?........

Almost..maybe
From the datasheet, It looks like an ON/OFF. I need ON/ON.
Unless I am mis-reading it. I have been looking at CMOS switching, for IC's, and all sorts of other tech docs, etc. for 14+ hours. I am a bit tired.

In a nut shell, what I need it to activate, via stompswitch (momentary) is basically a DPDT (ON/ON) and a 5PDT (ON/OFF though ON/ON would be fine here).
Sort of like a DPDT stomp AND either connect or disconnect 5 wires with a single action.
1 of the 5 is for an LED so I could get by with 4 and use a millennium bypass.
Hope thats clear enough.

Thanks

No worries, I'll have a good look around and see what I can dig up for you mate....

Thanks.
I've been at this for far to many hours today/yesterday/etc. 9:30am here now. I may sleep soon.
And once I get this to work, it will all be posted somewhere here of course.

DrNomis wrote: I just had a thought, if you arrange things so that the outputs of two of the switches in a CD4066 are joined together, then alternately switch one on, and the other off, you would effectively get a switch functioning as per your diagram, but the downside is you'd probably need several CD4066 IC's....

If I get desperate, I can make it work with 2 or 3 CD4053's

If you do get it built up and it appears to work, but switches randomly and you're using a momentary footswitch, try putting a 100nF film cap across the footswitch and it should switch reliably (the random switching is caused by contact-bounce)....

DrNomis wrote:

CodeMonk wrote:

DrNomis wrote:

CodeMonk wrote:

DrNomis wrote:

CodeMonk wrote:I read RG Keens article on CMOS switching.
Almost fits my needs. Almost.
Basically where you have the CD4053 that he uses, it works as a 3PDT switch. I need a 7PDT switch (8PDT type would do, even a 6PDT would work).
I need this to be controlled via a stomp switch so I'm working off of RG's article and going with the CD4013 and a momentary switch to make things work. Unless I find a different solution.
I could probably get by with 2 CD4053's if need be but prefer a single chip solution.

A Maxim 4760 fills the bill but its only available in a UCSP or QFN packages.

Thanks for any input.

How about the CD4066 Quad Bilateral Switch IC, or maybe two of them?........

Almost..maybe
From the datasheet, It looks like an ON/OFF. I need ON/ON.
Unless I am mis-reading it. I have been looking at CMOS switching, for IC's, and all sorts of other tech docs, etc. for 14+ hours. I am a bit tired.

In a nut shell, what I need it to activate, via stompswitch (momentary) is basically a DPDT (ON/ON) and a 5PDT (ON/OFF though ON/ON would be fine here).
Sort of like a DPDT stomp AND either connect or disconnect 5 wires with a single action.
1 of the 5 is for an LED so I could get by with 4 and use a millennium bypass.
Hope thats clear enough.

Thanks

No worries, I'll have a good look around and see what I can dig up for you mate....

Thanks.
I've been at this for far to many hours today/yesterday/etc. 9:30am here now. I may sleep soon.
And once I get this to work, it will all be posted somewhere here of course.

DrNomis wrote: I just had a thought, if you arrange things so that the outputs of two of the switches in a CD4066 are joined together, then alternately switch one on, and the other off, you would effectively get a switch functioning as per your diagram, but the downside is you'd probably need several CD4066 IC's....

If I get desperate, I can make it work with 2 or 3 CD4053's

If you do get it built up and it appears to work, but switches randomly and you're using a momentary footswitch, try putting a 100nF film cap across the footswitch and it should switch reliably (the random switching is caused by contact-bounce)....

RG's article has a bit about using a CD4013 to activate the CMOS switch. It says something about the bounce.
This is where I started my journey :
http://www.geofex.com/article_folders/cd4053/cd4053.htm
Thanks.

If one of the 7 is just to light an LED your best bet (cost, complexity, availability all taken into account) is two CD4053 chips. Wire all their control lines together and you have a 6PDT. The thing that does the controlling can also light an LED. Done.

earthtonesaudio wrote:If one of the 7 is just to light an LED your best bet (cost, complexity, availability all taken into account) is two CD4053 chips. Wire all their control lines together and you have a 6PDT. The thing that does the controlling can also light an LED. Done.

Thats probably what I am going to end up going with.
Was just looking for a single chip solution.

Thanks

DrNomis wrote: DELETED STUFF
If you do get it built up and it appears to work, but switches randomly and you're using a momentary footswitch, try putting a 100nF film cap across the footswitch and it should switch reliably (the random switching is caused by contact-bounce)....

Got the CD4013 all hooked up. And yeah, it was bouncing.
Then I remembered the 104 cap you suggested.
My reaction?

Gonna go and pick up some CD4053's tomorrow and wire all that up.

I need another breadboard too.

Thanks

I dumped the CD4013 idea.
Using a CD4049 instead.
Much less sensitive to bounce.

CodeMonk wrote:I dumped the CD4013 idea.
Using a CD4049 instead.
Much less sensitive to bounce.

Yeah, it's one of my favorite IC's cause it's pretty versatile, you can use it to build a 60kHz Square-Wave Oscillator to drive a voltage-multiplier made up of 2 X 33k resistors, 1 X 330pF Ceramic Capacitor, 5 X 1N4007 diodes and 5 X 47uF/50V Electrolytic Capacitors, which will generate about 42V from a +15V supply, really easy to implement.....