# I need a chip identified: TI 36A2DKK

I got a Smart Card reader out of a laptop. There's not much going on on the board, just the card receptacle on one side, with the contact springs, and two ICs on the back side:

A Cypress CY7C63001 A-SC USB micro controller, which is the bigger of the two, and finding datasheets for that is no problem.

Now the chip that interfaces the Smart Card chip, is a Texas Instruments 36A2DKK (2nd line: HC02), no datecode. It's a 14 pin SOIC-150 package.

I can't really show you a picture, I don't have any camera or macro lenses, that would make a decent photo of the markings.

I checked the usual places for datasheets, and manufacturers websites, but I can't find a single thing about it. The datecode on the micro controller is 0406, 4th week of 2006 would make sense.

## 1 Answer

It's a SN/CD54/74HC02 quad NOR. The "36A2DKK" is a lot code.

source

• Can you provide a source for your info? It's not that I don't believe you. It's just that this is extremely error prone. I looked at the TI datasheet and other docs for the 74HC02 and couldn't find anything about how it's marked. – user3624 Aug 25 '13 at 22:33
• @DavidKessner: Source added. – Ignacio Vazquez-Abrams Aug 25 '13 at 22:35
• Thanks, the HC02 looked suspiciously like 74-series logic, but I was a bit confused why they'd use that in a Smart Card reader (I was expecting something like a more sophisticated interface, with Vpp booster or something). – polemon Aug 25 '13 at 23:11