Description
4081 – An IC With Four AND Gates
The 4081 is a CMOS chip with four AND gates. An AND gate is a logic gate that gives a HIGH output only when all its inputs are HIGH.
This particular Integrated Circuit (IC) has four AND gates and each gate has two inputs. Therefore it’s often called a
Quad 2-Input AND Gate
.
CD4081 IC Pinout Description
Pin Number
Pin Name
Pin Description
14
VDD
Supply voltage input, 5V to 15V
7
VSS
Ground reference
1, 2
INPUT
AND gate one inputs
3
OUTPUT
AND gate one output
5, 6
INPUT
AND gate two inputs
4
OUTPUT
AND gate two output
8, 9
INPUT
AND gate three inputs
10
OUTPUT
AND gate three output
12, 13
INPUT
AND gate four inputs
11
OUTPUT
AND gate four output
Features
Four two-input AND gates in one package
Wide supply range – 5V to 15V typical
700mW power dissipation
Symmetrical output characteristics
Maximum input leakage 1 µA at 15V over a full temperature range
Available in the DIP-14 package
Note:
Complete technical details about this IC can be found in the
CD4081 datasheet
, linked at the end of the page.
What is an AND gate?
An AND gate is one of the basic logic gates. It can have two or more inputs. It gives a HIGH output only when all of these inputs are HIGH. The basic AND gate has two inputs and you can see its symbol and truth table below.
AND gate symbol
Input A
Input B
Output Q
0
0
0
1
0
0
0
1
0
1
1
1
Truth Table for the AND gate
Applications
Logic buffers, inverters, and decoders
Implementing logic circuits
Signal conditioning
4081 Datasheet
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