Description
4012 Dual 4-Input
NAND Gate
20V PDIP-14
The 4012 Dual 4-Input NAND Gate is a CMOS logic integrated circuit containing two independent NAND gates, each with four inputs. Packaged in a standard 14-pin PDIP, this IC operates over a wide supply voltage range up to 20 V, offering excellent noise immunity, low quiescent current, and broad compatibility with TTL and CMOS logic families. Each NAND gate performs the Boolean function
Y = (A • B • C • D)′
, producing a high output except when all inputs are high. The CD4012’s robust CMOS design makes it suitable for digital logic, control systems, address decoding, and general purpose logic functions in both industrial and hobbyist electronics.
Features
Four Input OR Gate – Dual Package
Typical Operating Voltage: 5V
Operating Voltage Range: 3V to 15V
Power Dissipation: 500mW
Minimum logic Low voltage @+5V: 0.05V
Minimum Logic High voltage @+5V: 4.95V
Propagation Delay @5V : 50ns (maximum)
Available in 14-pin PDIP, GDIP, PDSO packages
PINOUT
Pin Number
Pin Name
Description
1
NAND Gate Output pin (1)
Output pin of NAND Gate – 1
2,3,4,5
NAND Gate Input pin (1)
Four Input pins of NAND Gate -1
7
Ground
Connect to the ground of the circuit.
9,10,11,12
NAND Gate Input pin (2)
Four Input pins of NAND Gate -2
13
NAND Gate Output pin (2)
Output pin of NAND Gate – 2
14
Vcc (Vdd)
Used to power the IC. Typically +5V is used
Note:
Complete Technical Details can be found at the
CD4012 datasheet
given at the end of this page.
Truth Table
The output J will follow the logic expression Y=
A.B.C.D
. This function is also called the
Sheffer Stroke Function
which is commonly used to form various gate logic using the universal NAND gate logic.
Input A
Input B
Input C
Input D
Output
(Y)
0
0
0
0
1
0
0
0
1
1
0
0
1
0
1
0
0
1
1
1
0
1
0
0
1
0
1
0
1
1
0
1
1
0
1
0
1
1
1
1
1
0
0
0
1
1
0
0
1
1
1
0
1
0
1
1
0
1
1
1
1
1
0
0
1
1
1
0
1
1
1
1
1
0
1
1
1
1
1
0
Specifications
Parameter
Value
Device Type
Dual 4-Input NAND gate
Logic Family
CD4012
Number of Gates
2
Inputs per Gate
4
Package Type
PDIP-14
Supply Voltage Range
3 V to 20 V
Mounting Type
Through-hole
Operating Temp Range
−55 °C to +125 °C
Output Drive
CMOS output levels
How to use CD4012 IC
To use the CD4012 IC, just power it using the Vcc (pin 14) and ground (pin 8) lines. The typical operating voltage of the IC is +5V, but it can also be operated in +5V, +10V and +15V. The output voltage of the IC on the pin Y will be equal to the operating voltage of the IC. As per the truth table shown above, when either one or both the input of the Gate is high the output will be high. The complete working of the gate with a sample circuit is shown in the GIF file below.
Applications
Logic Buffer circuit
Basic Logic Circuits
Encoders and Decoders
Multiplexers and De-multiplexers
Oscillator circuits
Networking and Digital Systems
Documents
Datasheet
CD4012BE
CAD Files
Download
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