how to find compatible component ? search made me bleary bra

[robb]

so i have a **DM7496** (DIP16) that is fried (obsolete), and i
need compatible replacement
datasheet says 5-Bit shift register, R-S master slave flip
flops , parallel in/out, serial in/out

how does one go about finding a suitable replacement ? what words
to look for ?

I have found lots of 8-Bit shift register ICs, universal, shift,
latch, storage, s->p, p->s, and various varieties but nothing
that looks similar or familiar to the 7496 datasheet

then i suppose if i find a similar 8-Bit shift reg version i will
need to do something special to the 3 regs not needed or used ???
like ability to address/mask/disable certain regs or address
where i get serial out from or maybe use the #5 parrallel out as
source for serial out ? and let the last 3 regs float ??

any helpful ideas very very welcomed,
robb

 

[John Larkin]

On Fri, 30 Nov 2007 10:38:24 -0500, "robb" <some@where.on.net> wrote:

so i have a **DM7496** (DIP16) that is fried (obsolete), and i
need compatible replacement
datasheet says 5-Bit shift register, R-S master slave flip
flops , parallel in/out, serial in/out

how does one go about finding a suitable replacement ? what words
to look for ?

I have found lots of 8-Bit shift register ICs, universal, shift,
latch, storage, s->p, p->s, and various varieties but nothing
that looks similar or familiar to the 7496 datasheet

then i suppose if i find a similar 8-Bit shift reg version i will
need to do something special to the 3 regs not needed or used ???
like ability to address/mask/disable certain regs or address
where i get serial out from or maybe use the #5 parrallel out as
source for serial out ? and let the last 3 regs float ??

any helpful ideas very very welcomed,
robb

http://store.americanmicrosemiconductor.com/sn7496.html

 

[Martin Crossley]

John Larkin wrote:

On Fri, 30 Nov 2007 10:38:24 -0500, "robb" <some@where.on.net> wrote:

so i have a **DM7496** (DIP16) that is fried (obsolete), and i
need compatible replacement
datasheet says 5-Bit shift register, R-S master slave flip
flops , parallel in/out, serial in/out

how does one go about finding a suitable replacement ? what words
to look for ?

SNIP
any helpful ideas very very welcomed,
robb


http://store.americanmicrosemiconductor.com/sn7496.html

If you search Ebay for SN7496N, SN7496 and 7496, there's quite a choice.

 

[Eeyore]

robb wrote:

so i have a **DM7496** (DIP16) that is fried (obsolete), and i
need compatible replacement

The vital piece of info*7496*. DM is simply a manufacturer specific prefix.

This means it's a standard 74 series TTL part. These are still widely available
in more modern versions. You may have trouble finding a genuine original 74
series part (the specs are very outdated now) but very likely an 'LS series part
(74LS96) or HCMOS 74HC(T)96 will function as a drop-in replacement.

Graham

 

[JeffM]

robb wrote:

so i have a **DM7496**

Eeyore wrote:

The vital piece of info*7496*. DM is simply a manufacturer specific prefix.

Yup. More here:
http://www.google.com/search?q=cache:kJ93KzQJDwIJ:www.national.com/appinfo/milaero/files/f64.pdf+National.Semiconductor+Digital.Monolithic+DM+Linear.Monolithic+LM

 

[robb]

Thanks John for the help,

Looks like a i jumped the gun... i had become so flustered
*not*-finding the obsolete parts i have needed lately that i just
plain gave up on google/yahoo-ing first.

i just went to digikey since they have been most consistent
source and they had nothing. after reading your's and other posts
i checked mouser and they have a compatible sub. probably the
same one jeffm pointed out.

To recover (save face) somewhat :}
Hypothetically speaking,
any ideas on how or what one does to replace such obsolete parts
when there is no direct drop in equiv EG. could the 8 bit
shift reg IC be **creatively** used to implement a 5 bit shift
reg IC or would one need to find a lowest denominator of ICs to
construct an equivalent circuit ?

sorry people if i jumped the question gun,
robb




"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote
in message news:qid0l3t407mnb1ben3eautqb6ck48hdm4b@4ax.com...

On Fri, 30 Nov 2007 10:38:24 -0500, "robb" <some@where.on.net
wrote:

so i have a **DM7496** (DIP16) that is fried (obsolete), and
i
need compatible replacement
datasheet says 5-Bit shift register, R-S master slave flip
flops , parallel in/out, serial in/out

how does one go about finding a suitable replacement ? what
words
to look for ?

I have found lots of 8-Bit shift register ICs, universal,
shift,
latch, storage, s->p, p->s, and various varieties but nothing
that looks similar or familiar to the 7496 datasheet

then i suppose if i find a similar 8-Bit shift reg version i
will
need to do something special to the 3 regs not needed or used
???
like ability to address/mask/disable certain regs or address
where i get serial out from or maybe use the #5 parrallel out
as
source for serial out ? and let the last 3 regs float ??

any helpful ideas very very welcomed,
robb


http://store.americanmicrosemiconductor.com/sn7496.html

 

[robb]

"Martin Crossley" <Martin@g8uwm.NOSPAMabelgratis.net> wrote in
message news:13l0gdp95rti9d1@corp.supernews.com...

John Larkin wrote:
On Fri, 30 Nov 2007 10:38:24 -0500, "robb"
some@where.on.net> wrote:
so i have a **DM7496** (DIP16) that is fried (obsolete),
and i

http://store.americanmicrosemiconductor.com/sn7496.html

If you search Ebay for SN7496N, SN7496 and 7496, there's quite
a choice.

Thanks Martin,
my bad, i usenet'ed too soon.
robb

 

[robb]

"Eeyore" <rabbitsfriendsandrelations@hotmail.com> wrote in
message news:4750452B.941A3EC9@hotmail.com...

robb wrote
so i have a **DM7496** (DIP16) that is fried (obsolete),
and i
need compatible replacement

The vital piece of info*7496*. DM is simply a manufacturer
specific prefix.

This means it's a standard 74 series TTL part. These are still
widely available
in more modern versions. You may have trouble finding a genuine
original 74
series part (the specs are very outdated now) but very likely
an 'LS series part
(74LS96) or HCMOS 74HC(T)96 will function as a drop-in
replacement.

Thanks Graham,
thanks for info, if i can keep all this stuff in my head i might
accomplish something .

i did happen to find a compatible part through mouser, iguess i
troubled the group to soon.
thanks again,
robb

 

[robb]

"JeffM" <jeffm_@email.com> wrote in message
news:5fc01782-3e95-405b-a268-5438e0b684b6@a39g2000pre.googlegroups.com...

robb wrote:
so i have a **DM7496**
Eeyore wrote:
The vital piece of info*7496*. DM is simply a manufacturer
specific prefix.
Yup. More here:

http://www.google.com/search?q=cache:kJ93KzQJDwIJ:www.national.com/appinfo/milaero/files/f64.pdf+National.Semiconductor+Digital.Monolithic+DM+Linear.Monolithic+LM

thanks jeff for helpful info/link

robb

 

[kilowatt]

Hello Robb

I have lots of these in my back room of 12300 part numbers.
This may solve your problem of finding this part. Contact me
if you still need this part. They run about $2 or 3 dollars + shpg.

surplus addict.
kilowatt

*************************************
On Nov 30, 7:38 am, "robb" <s...@where.on.net> wrote:

so i have a **DM7496** (DIP16) that is fried (obsolete), and i
need compatible replacement
datasheet says 5-Bit shift register, R-S master slave flip
flops , parallel in/out, serial in/out

how does one go about finding a suitable replacement ? what words
to look for ?

I have found lots of 8-Bit shift register ICs, universal, shift,
latch, storage, s->p, p->s, and various varieties but nothing
that looks similar or familiar to the 7496 datasheet

then i suppose if i find a similar 8-Bit shift reg version i will
need to do something special to the 3 regs not needed or used ???
like ability to address/mask/disable certain regs or address
where i get serial out from or maybe use the #5 parrallel out as
source for serial out ? and let the last 3 regs float ??

any helpful ideas very very welcomed,
robb

 

[John Fields]

On Fri, 30 Nov 2007 15:34:14 -0500, "robb" <some@where.on.net>
wrote:

Thanks John for the help,

Looks like a i jumped the gun... i had become so flustered
*not*-finding the obsolete parts i have needed lately that i just
plain gave up on google/yahoo-ing first.

i just went to digikey since they have been most consistent
source and they had nothing. after reading your's and other posts
i checked mouser and they have a compatible sub. probably the
same one jeffm pointed out.

To recover (save face) somewhat :}
Hypothetically speaking,
any ideas on how or what one does to replace such obsolete parts
when there is no direct drop in equiv EG. could the 8 bit
shift reg IC be **creatively** used to implement a 5 bit shift
reg IC or would one need to find a lowest denominator of ICs to
construct an equivalent circuit ?

---
Depends on how the chip is used. For example, if all of the pin
functions are used, you could build an equivalent with three 7474s
and two 7400s.


--
JF