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dlh
Joined: 15 Dec 2006
Posts: 285
Location: ~Cincinnati
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Posted: 22 June 2011, 17:29 PM Post subject: Need help with a wiring diagram |
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The wonderful folks at Tibbo have already changed the pinout and wiring diagram for the EM500/GA1000 combo, making my shield layout obsolete. The new arrangement is shown in Fig C at...
I'm not at all clear on what the symbols between GPIO6 & GPIO7 represent. |
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twesthoff
Joined: 17 Mar 2006
Posts: 199
Location: Fredericksburg, VA
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Posted: 22 June 2011, 17:32 PM Post subject: Need help with a wiring diagram |
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Those are 2-input Nand gates.
On 6/22/2011 1:29 PM, General wrote: | Quote: | The wonderful folks at Tibbo have already changed the pinout and wiring diagram for the EM500/GA1000 combo, making my shield layout obsolete. The new arrangement is shown in Fig C at...
I'm not at all clear on what the symbols between GPIO6 & GPIO7 represent.
davehouston.org
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dlh
Joined: 15 Dec 2006
Posts: 285
Location: ~Cincinnati
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Posted: 22 June 2011, 17:56 PM Post subject: Re: Need help with a wiring diagram |
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| twesthoff wrote: | | Those are 2-input Nand gates. |
In one project where I want to use this, space is at a premium. Can anybody suggest a small footprint IC for this? |
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twesthoff
Joined: 17 Mar 2006
Posts: 199
Location: Fredericksburg, VA
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Posted: 22 June 2011, 18:02 PM Post subject: Need help with a wiring diagram |
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Here is a small one. There are several varieties available in the "Tiny" series.
On 6/22/2011 1:56 PM, General wrote: | Quote: | twesthoff wrote: Those are 2-input Nand gates. In one project where I want to use this, space is at a premium. Can anybody suggest a small footprint IC for this?
davehouston.org
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dlh
Joined: 15 Dec 2006
Posts: 285
Location: ~Cincinnati
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Posted: 22 June 2011, 18:19 PM Post subject: Re: Need help with a wiring diagram |
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| twesthoff wrote: | | Here is a small one. There are several varieties available in the "Tiny" series. |
That's so small I can't see it.  |
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dkinzer
Site Admin
Joined: 03 Sep 2005
Posts: 2593
Location: Portland, OR
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Posted: 22 June 2011, 18:25 PM Post subject: Re: Need help with a wiring diagram |
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| dlh wrote: | | Can anybody suggest a small footprint IC for this? |
The TC7W series includes a package with two 2-input NAND gates (74xx00 equivalent), e.g. Digi-Key p/n TC7W00FUTTR-ND. |
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dlh
Joined: 15 Dec 2006
Posts: 285
Location: ~Cincinnati
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Posted: 22 June 2011, 18:53 PM Post subject: Re: Need help with a wiring diagram |
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| dkinzer wrote: | | The TC7W series includes a package with two 2-input NAND gates (74xx00 equivalent), e.g. Digi-Key p/n TC7W00FUTTR-ND. |
Thanks, Don and Tom. |
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dkinzer
Site Admin
Joined: 03 Sep 2005
Posts: 2593
Location: Portland, OR
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Posted: 22 June 2011, 19:16 PM Post subject: Re: Need help with a wiring diagram |
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| dlh wrote: | | Can anybody suggest a small footprint IC for this? |
Also, there are the 74HC2G00 and 74HCT2G00. Digi-Key has no stock on these but Mouser does. These are electrically equivalent to the 74HC and 74HCT series devices, respectively, but offer two devices per package. |
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dlh
Joined: 15 Dec 2006
Posts: 285
Location: ~Cincinnati
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Posted: 22 June 2011, 20:20 PM Post subject: |
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| Since I already have a Mouser list, I'll go with one they have. |
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