Re: [ukvac] [Tech] Prom/Rom compatibility & capability questions
At 11:56 18-06-01 , you wrote:
>Now then, some questions to be answered please...
>
>1) Is an 82S147N compatible with a N82S147N? - the latter (that is in there
>at the mo) is double the price! - oh, and does anyone have any please, as i
>want three (one will suffice, but three would be ideal) i don't really want
>to be paying over ten quid each for them!
>
>2) Can anyone program these? My progger doesn't do them :O(
Yes No problem send the prom and a file
>3) Logic chips - while an LS74S374N (original part) is pin compatible with
>an LS74LS374N, the specs are different. Would this fry something else
>causing background corruption? The original 74S374 seems okay (remember it
>turned out to be the ram chip, not the logic chip). - i have bucket loads
>(well, not quite!) of the LS variety, but none of the S variety.
The ' L' stands for low power
if the chip has many dependant outputs ie a high fanout
then you may need to use the 'S' version.
'S' = Schottky"
"L' = Low Power
Regards Pete (Invadar)
I have made this an open reply
as the info may be of use to others.
>Cheers,
>Martin.
>
>---------------------------------------------------
>Martin White
>
>Coming real soon...
><http://www.guddler.btinternet.co.uk>http://www.guddler.btinternet.co.uk
>
>Yet another arcade site(!) with info on games owned, repair logs (as and
>when), projects and more.
>
>
>Yahoo! Groups
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>=1700047754:N/A=696470/*http://www.matchmaker.com/home?rs=200082>
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At 11:56 18-06-01 , you wrote:
>Now then, some questions to be answered please...
>
>1) Is an 82S147N compatible with a N82S147N? - the latter (that is in there
>at the mo) is double the price! - oh, and does anyone have any please, as i
>want three (one will suffice, but three would be ideal) i don't really want
>to be paying over ten quid each for them!
>
>2) Can anyone program these? My progger doesn't do them :O(
Yes No problem send the prom and a file
>3) Logic chips - while an LS74S374N (original part) is pin compatible with
>an LS74LS374N, the specs are different. Would this fry something else
>causing background corruption? The original 74S374 seems okay (remember it
>turned out to be the ram chip, not the logic chip). - i have bucket loads
>(well, not quite!) of the LS variety, but none of the S variety.
The ' L' stands for low power
if the chip has many dependant outputs ie a high fanout
then you may need to use the 'S' version.
'S' = Schottky"
"L' = Low Power
Regards Pete (Invadar)
I have made this an open reply
as the info may be of use to others.
>Cheers,
>Martin.
>
>---------------------------------------------------
>Martin White
>
>Coming real soon...
><http://www.guddler.btinternet.co.uk>http://www.guddler.btinternet.co.uk
>
>Yet another arcade site(!) with info on games owned, repair logs (as and
>when), projects and more.
>
>
>Yahoo! Groups
>Sponsor<http://rd.yahoo.com/M=209664.1474806.3050428.1273155/D=egroupmail/S
>=1700047754:N/A=696470/*http://www.matchmaker.com/home?rs=200082>
>
>Your use of Yahoo! Groups is subject to the
><http://docs.yahoo.com/info/terms/>Yahoo! Terms of Service.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/