Tie something low on various high signals

[chico]

I have a switch (literally 5V or 0V) that I would like to tie low if any 1 of 4 signals is high (also 5V or 0V). I imagine there is some part that I can use to do this, but my knowledge of random ICs etc is little.

Anyone have any ideas? I know I could do this with a number of MOSFETs but that would be ugly.

 

[MikeMl]

You are describing a 4 input NOR gate like a 4002.

How much current do you want it to source/sink?

 

[chico]

haha good idea, thats very simple too! I feel silly.
Its only like 5mA on the input/output signals

 

[micr0man]

If you need to draw higher currents a simple transistor can be used like the following:
**broken link removed**

remember: this confguration acts like a NOT gate so a 4 input AND gate should be used instead