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'[EE] High Speed cmos AND gate'
2005\09\25@132326 by KY1K

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I need a higher speed version of a CD4073, which is 3 AND gates, each
having 3 inputs. Or, I need an 8 input AND gate. I can't find the 8
input AND gate, so I think I will need to use the CD4073 to make an
equivalent multi-input AND gate.

IF I could find a higher speed version of the CD4073, I'd be a happy camper.

It has to work at 15 MHz, so the standard 4000 series gates won't
work, especially at 5 volts Vcc.

I searched for HCT, HC, and other variants that might be faster, but
I can't find anyone who makes a chip other than the basic 4000 series family.

Any suggestions for a vendor or an alternative chip?

It has to be cmos for low power battery operation and I need a one
chip solution since I don't have other gates available in the design.

Thanks,

Art


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2005\09\25@164129 by Herbert Graf

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face
On Sun, 2005-09-25 at 13:23 -0400, KY1K wrote:
> I need a higher speed version of a CD4073, which is 3 AND gates, each
> having 3 inputs. Or, I need an 8 input AND gate. I can't find the 8
> input AND gate, so I think I will need to use the CD4073 to make an
> equivalent multi-input AND gate.
>
> IF I could find a higher speed version of the CD4073, I'd be a happy camper.
>
> It has to work at 15 MHz, so the standard 4000 series gates won't
> work, especially at 5 volts Vcc.
>
> I searched for HCT, HC, and other variants that might be faster, but
> I can't find anyone who makes a chip other than the basic 4000 series family.
>
> Any suggestions for a vendor or an alternative chip?
>
> It has to be cmos for low power battery operation and I need a one
> chip solution since I don't have other gates available in the design.

Check out the cool runner series of CPLDs from Xilinx, should do what
you want. TTYL

-----------------------------
Herbert's PIC Stuff:
http://repatch.dyndns.org:8383/pic_stuff/

2005\09\25@171036 by Tom Sefranek

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And what's wrong with a 74HC11 or that kind?

KY1K wrote:

{Quote hidden}

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 |  __O    Thomas C. Sefranek   spam_OUTWA1RHPTakeThisOuTspamARRL.net
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hamradio.cmcorp.com/inventory/Inventory.html
http://www.harvardrepeater.org


2005\09\25@200915 by KY1K

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The HC11 is a flip flop.

I did find a 74HC20, but they aren't very common (only 1 vendor makes
it in an HC version).

Thanks,

Art

At 05:10 PM 9/25/2005, you wrote:

{Quote hidden}

>

2005\09\25@220514 by Mark Rages

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On 9/25/05, KY1K <ky1kspamKILLspampivot.net> wrote:
> The HC11 is a flip flop.

Wrong.

> I did find a 74HC20, but they aren't very common (only 1 vendor makes
> it in an HC version).
>

Digi-Key sells 74HC30's from Philips and TI.

Regards,
Mark
markrages@gmail
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2005\09\25@221343 by Spehro Pefhany

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At 08:09 PM 9/25/2005 -0400, you wrote:
>The HC11 is a flip flop.

Maybe you're thinking of the HC112 (?)

74HC11  etc.

If you do a parametric search at TI you end up with ones like this one:

http://focus.ti.com/lit/ds/symlink/sn74ac11.pdf

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
.....speffKILLspamspam.....interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com




2005\09\26@195306 by Tom Sefranek

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KY1K wrote:

> The HC11 is a flip flop.

Hasn't been for the last 30 years!
And I rather doubt that the industry would change this standard part.
You need to re-check your information.

The 10 is a NAND
the 11 is an AND
The 20 is a NAND
the 21 is an  AND
the 30 is...
ETc

Feel free to check my inventory for the real information:
http://hamradio.cmcorp.com/inventory/LOGIC/TTL.html

Tom

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 |  __O    Thomas C. Sefranek   EraseMEWA1RHPspam_OUTspamTakeThisOuTARRL.net
 |_-\<,_   Amateur Radio Operator: WA1RHP  
 (*)/ (*)  Bicycle mobile on 145.41, 448.625 MHz

hamradio.cmcorp.com/inventory/Inventory.html
http://www.harvardrepeater.org


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