I need help identifying some IC

Hi, I found a bag with some IC and I need help to identify them, here is some picture;


1.


2.


3.


4.


5.

| NEC Japan |
| 424210A-60 |

9529NU002

Some nasty stuff you have there. Some of those need some serious Google-fu to find data on. I guess you disassembled a 20 year old printer or computer

#1: TC5588P-25: 64k CMOS static RAM 8192x8
#2: µPB8288: CPU System Bus Controller 20-pin
#3: W24257AK-15: 32kx8 CMOS static RAM
#4: 74LS139: DUAL 1-OF-4 DECODER/ DEMULTIPLEXER
#5: 74LS374: Octal D-type Edge-triggered Flip-Flops

Korman

I know this is old, honestly I didn't remember where this came from. This is an old bag I found in a really old box in the garage.

#6. NEC uPD424210: 4 Mbit Dynamic RAM (256K 16-bit words).

Regards,

Dave

Mystery solved, it seems. #4 and #5 can still be used for fun with an Arduino, the rest I guess aren't that useful.

Korman

Mystery solved, it seems. #4 and #5 can still be used for fun with an Arduino, the rest I guess aren't that useful.

Keven Belanger, while Korman is right that the other parts aren't too useful from an Arduino perspective (while they might be possible to use, there are better solutions out there today) - they might still be considered useful to antique/vintage hardware enthusiasts.

You might consider doing some pricing research on those other parts via various surplus outlets. A couple of good places where you might find those parts you have:

http://www.bgmicro.com/

Those are just a couple, and by no means is that an "exhaustive" list. I'd offer to buy them myself, but I already have more old 8-bit and low-speed TTL parts than I can shake a stick at... But hey, I'm a sucker - so if the price is right...

:wink:

Once you have an idea what the parts are worth on the market, you might try putting them up on Ebay yourself, or offering them on Craigslist, or maybe putting a post up on the MESS/MAME forums/lists - I have a feeling that some of those parts may find homes inside old computers and arcade machines (and you might make some coin, too!)...

:slight_smile:

I will certainly give a look at it, for now, here is the quantity. If you
want to make an honnest offer, I'm open to it.

8X #1: TC5588P-25: 64k CMOS static RAM 8192x8
1X #2: µPB8288: CPU System Bus Controller 20-pin
1X #3: W24257AK-15: 32kx8 CMOS static RAM
2X #4: 74LS139: DUAL 1-OF-4 DECODER/ DEMULTIPLEXER
1X #5: 74LS374: Octal D-type Edge-triggered Flip-Flops
2X #6. NEC uPD424210: 4 Mbit Dynamic RAM (256K 16-bit words).