Help identifying ICs

[Chris Osborn]

I have a handful of chips here that I can't figure out what they
are. Their markings are:

UA3403PC
F7827
DJAKARTA

UA3403PC
F7828
DJAKARTA

6915A
7118432

MOC
3031
8343

Or if a picture would help (it's quite large):

http://fozztexx.com/~fozztexx/UnID-IC.jpg

 

[Tom Woodrow]

google UA3403 ... quad op amp

7827 = 27 week of 1978 etc

google MOC3031 ... zero crossing triac driver

8344 date code = 44 week of 1983

Tom Woodrow

 

[Bubba Jones]

I have a handful of chips here that I can't figure out what they
are. Their markings are:

UA3403PC
F7827
DJAKARTA

UA3403PC
F7828
DJAKARTA

6915A
7118432

MOC
3031
8343

Or if a picture would help (it's quite large):

http://fozztexx.com/~fozztexx/UnID-IC.jpg

ua3403pc = Quad Op Amp ----
http://www.onsemi.com/pub/Collateral/MC3403-D.PDF

MOC3031 = Opticoupler (triac output) -
http://www.isocom.com/datasheets/db92006.pdf


6915A - i dunno but it is a Texas Instruments chip


Bubba

 

[Joe McElvenney]

Hi,

And how about a guess at a 711 dual-comparator for the last
one.

Cheers - Joe

 

[Michael Black]

Hi,

And how about a guess at a 711 dual-comparator for the last
one.

Cheers - Joe

Maybe, but that seems to be the date code. At least, the others have
date codes of 83/84 (except for the one with a '78 date code) and you
can be sure of those dates since the IC numbers are very clear. That
number with the 711 has a bit that has an 83 or 84 in it, which matches
the vintage of the other ICs.

Michael

 

[Roger Johansson]

A search on Texas Instr. web site http://www.ti.com/ gives only one hit
for 6915A

-5.2Vout 12W 3.3V-Input Adjustable Plus to Minus Voltage Converter

 

[Dan Fraser]

GOOGLE!!!!!