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74ls20 sub?

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pinnut

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Oct 2, 2012, 6:13:42 PM10/2/12
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looking for a 74LS20 for a sys 11 board. gpe and big daddy dont show
it. big daddy has everything else i need. is there a sub i can use?

thanks

TheKorn

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Oct 2, 2012, 6:16:48 PM10/2/12
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pinnut <mhoo...@verizon.net> wrote in news:ceb58269-3837-4c3e-8d70-76f796303280
@i14g2000yqe.googlegroups.com:

> looking for a 74LS20 for a sys 11 board. gpe and big daddy dont show
> it. big daddy has everything else i need. is there a sub i can use?

74...20? 4-input NAND? You sure about that?

Try a 74HCT20 if you really need a 7420.

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pinnut

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Oct 2, 2012, 6:24:23 PM10/2/12
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On Oct 2, 6:16 pm, TheKorn <TheK...@TheKorn.Net> wrote:
> pinnut <mhooke...@verizon.net> wrote in news:ceb58269-3837-4c3e-8d70-76f796303280
yep. at U33. got hit with battery goo.

thanks

John Robertson

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Oct 2, 2012, 7:19:55 PM10/2/12
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TheKorn wrote:
> pinnut <mhoo...@verizon.net> wrote in news:ceb58269-3837-4c3e-8d70-76f796303280
> @i14g2000yqe.googlegroups.com:
>
>> looking for a 74LS20 for a sys 11 board. gpe and big daddy dont show
>> it. big daddy has everything else i need. is there a sub i can use?
>
> 74...20? 4-input NAND? You sure about that?
>
> Try a 74HCT20 if you really need a 7420.
>

74ALS20 should also work if you can find it...I prefer ALS over HCT due
to differences in trigger voltage levels.

John :-#)#

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Oct 2, 2012, 8:22:38 PM10/2/12
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"pinnut" <mhoo...@verizon.net> wrote in message
news:ceb58269-3837-4c3e...@i14g2000yqe.googlegroups.com...
> looking for a 74LS20 for a sys 11 board. gpe and big daddy dont show
> it. big daddy has everything else i need. is there a sub i can use?
>
> thanks



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