Hi,

I'm currently working on a keypad circuit, in which a key press must be detected. The keypad is a 3x4 matrix. When a key is pressed, a 0 pulse will be sent to one row and one column.

I was told that the 74HC4052 IC could be used to help with my circuit, but i'm struggling to grasp the concept of how it could be used.

The following is a link to the IC's datasheet: http://www.datasheetcatalog.org/datasheet/philips/74HC4052N.pdf

If anyone could point me in the right direction it would be greatly appeciated.

Thanks.

EDIT: Made a mistake in the title, should say 74HC4052

 

Would anyone be able to help please?

 

Why don't you just use a 74HC595 shift register instead?

 

Why don't you just use a 74HC595 shift register instead?

It's required as part of my Uni project that i must use this multiplexer/demultiplexer.

I was wondering what the z output would be if for example, the Y3 channel was turned on and was at a high state?