Triple Input AND Gate - 7411

Alan173

Well-known member
Joined
Nov 14, 2007
Messages
1,537
Reaction score
98
Location
Macomb County, Michigan
Is anyone familiar with checking a 7411 chip with a logic probe? Is it possible? The logic table is confusing to me (3 inputs and 1 output) and I thought maybe somebody out there could give me a quick run down of how this chip functions. Scratching my head going through a Breakout board repair and believe this chip could be my problem. Of course...it is one of the few chips I don't have...so I would like to know for sure if it is my last problem chip.

Here is a link to the datasheet:

http://www.unicornelectronics.com/ftp/Data Sheets/7411.pdf
 
Last edited:
Is anyone familiar with checking a 7411 chip with a logic probe? Is it possible? The logic table is confusing to me (3 inputs and 1 output) and I thought maybe somebody out there could give me a quick run down of how this chip functions. Scratching my head going through a Breakout board repair and believe this chip could be my problem. Of course...it is one of the few chips I don't have...so I would like to know for sure if it is my last problem chip.

Here is a link to the datasheet:

http://www.unicornelectronics.com/ftp/Data Sheets/7411.pdf

Just think of ANDing the output of a 2-input AND gate with the third input.

For all inputs except I1=I2=I3=1, the output will be 0 (low). Only when all three inputs are high will you see the output high.

I1 I2 I3 | O
-----------
0 0 0 | 0
0 0 1 | 0
0 1 0 | 0
0 1 1 | 0
1 0 0 | 0
1 0 1 | 0
1 1 0 | 0
1 1 1 | 1
 
Last edited:
Wow! Thanks for the quick response. And taking the time to write it out. For some reason I was stumbling over this triple input AND gate........thanks for the virtual face slap!

Now I'm going to go check that chip...;)


Just think of ANDing the output of a 2-input AND gate with the third input.

For all inputs except I1=I2=I3, the output will be 0 (low). Only when all three inputs are high will you see the output high.

I1 I2 I3 | O
-----------
0 0 0 | 0
0 0 1 | 0
0 1 0 | 0
0 1 1 | 0
1 0 0 | 0
1 0 1 | 0
1 1 0 | 0
1 1 1 | 1
 
Wow! Thanks for the quick response. And taking the time to write it out. For some reason I was stumbling over this triple input AND gate........thanks for the virtual face slap!
Ha! Nothing but a nudge. Sometimes that's just what it takes after focusing on something and not making progress.

Good luck and have fun!
 
Back
Top Bottom