component marking not clear

[yassin.kraouch]

I have a component, but i was not able to recognize it,
the marking on the package is HC02 and just below HC02 it is written 1k3y012,
can anyone help me to knw this component ?

 

[FANT]

For me it is just a 74 HC 02.

It is also a 7 + 7 pin as the one mentioned by me.

Here is the link:
**broken link removed**

Looks like it is the one of Fig. and/or the one at page 10.

Mandi

 

[maros_d]

really sharp picture... and yes, it is 74HC02 in TSSOP package.

 

[yassin.kraouch]

i found this component in a PIR sensor, you think how this IC is used in combination with PIR sensor ?

 

[maros_d]

Its quad 2-input NOR gate, so maybe for logical operation (if there are two PIR sensors) or for negation of a signal...or some signal processing (sharp edges and so on).

 

[yassin.kraouch]

near this component i found a 555 timer, i dont know why

 

[maros_d]

me too. You could search some schematics for PIR sensors on the internet. It depends on the application