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how to find compatible component ? search made me bleary brained

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

Reply to
robb
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Reply to
John Larkin

SNIP

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

Reply to
Martin Crossley

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 You may have trouble finding a genuine original 74 series part (the specs are very outdated now) but very likely an 'LS series part (74LS96) or HCMOS 74HC(T)96 will function as a drop-in replacement.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

Reply to
Eeyore

Eeyore wrote:

Yup. More here:

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Reply to
JeffM

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

i

words

shift,

will

???

as

Reply to
robb

and i

a choice.

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

Reply to
robb

and i

specific prefix.

widely available

original 74

an 'LS series part

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

Reply to
robb

specific prefix.

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thanks jeff for helpful info/link robb

Reply to
robb

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

************************************* > so i have a **DM7496** (DIP16) that is fried (obsolete), and i
Reply to
kilowatt 

--
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.
Reply to
John Fields

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