3 ms·
I recognize that chip at the bottom of the article! That's a Hitachi HA17555, which was on Zeptobars just a few months ago[0]. [0]: https://zeptobars.com/en/re
by microcolonel 9y ago
I recognize that chip at the bottom of the article! That's a Hitachi HA17555, which was on Zeptobars just a few months ago[0].
[0]: https://zeptobars.com/en/read/Hitachi-HA17555-555-timer https://zeptobars.com/en/read/Hitachi-HA17555-555-timer
- kw71 9y agoInteresting I wonder what the history of this design is? And how Hitachi's (or their partner's) die really wound up being re-marked as TI? If the die is a Chinese produced copy, why did they keep the markings during retooling? I wish photographs of the packages were presented also. Edit: The other "not genuine" die has quite a few similarities and it looks like one inspired the other.
- microcolonel 9y agoI swear I've seen the logo on that one somewhere as well, but I can't seem to recall or find it anywhere else.
- lokedhs 9y agoCould it be that the Hitachi in the picture is also a fake, based on the same design as the faked Ti?
- simcop2387 9y agoIf it's copied, they likely copied it entirely because trying to remove bits of the lithography mask is expensive and time consuming. Since it's not normally scene there's no use in spending the time or money to change it if you can get the mask.
- puncturevine 9y agoIt could be a die copy but it could also be a used HA17555 harvested from e-waste and remarked as NE555 with a fresh date code.
- BarsMonster 9y agoWow, nice memory! Even I missed that. That means HA17555 is most likely also fake.