Description
CD4027BD Dual J-K
Master-Slave Flip-Flop
20V 200µA IC DIP-16
The CD4027BD is a CMOS logic integrated circuit that contains two independent J-K master-slave flip-flops within a single package. Each flip-flop includes J and K data inputs, a clock input, asynchronous set and reset controls, and complementary Q and Q̅ outputs.
The master-slave configuration ensures reliable state changes synchronized with the clock signal, preventing unwanted transitions. Thanks to CMOS technology, the CD4027BD offers low power consumption, wide operating voltage range, and excellent noise immunity, making it suitable for both low-power battery devices and industrial digital systems.
It is widely used in counters, frequency dividers, memory storage elements, sequencing circuits, and digital control systems, where stable and predictable logic operation is required.
Features:
Dual independent J-K flip-flops.
Master-slave flip-flop architecture.
Asynchronous set and reset inputs.
Complementary Q and Q̅ outputs.
Clock-controlled state switching.
Static operation (data retained without clock).
CMOS logic technology.
High noise immunity.
Specifications:
Parameter
Symbol
Value
Unit
Conditions / Description
Logic Type:
–
Dual J-K Master-Slave Flip-Flop
–
Functional description
Number of Flip-Flops:
–
2
–
Internal flip-flop count
Output Type:
–
Q and Q̅
–
Complementary outputs
Trigger Type:
–
Clock controlled
–
Master-slave architecture
Technology:
–
CMOS
–
Logic family
Package Type:
–
DIP-16
–
Through-hole package
Mounting:
–
Through-Hole
–
PCB mounting style
Supply Voltage:
VDD
-0.5 to 20
V
Absolute maximum
Input Voltage:
VIN
-0.5 to VDD + 0.5
V
All inputs
Supply Current:
IDD
200
µA
VDD = 20V, TA = +125°C
Input Current:
IIN
1
µA
18V, full temperature
Propagation Delay Clock:
tPHL / tPLH
130
ns
VDD = 10V, CL = 50pF
Maximum Clock Frequency:
fCL
12
MHz
VDD = 15V
Operating Temperature:
TA
-55 to +125
°C
Industrial range
Pinout:
Pin
Name
Description
1
Q1
Output of Flip-Flop 1
2
Q̅1
Inverted Output of Flip-Flop 1
3
CP1
Clock Input 1
4
R1
Reset 1
5
K1
K Input 1
6
J1
J Input 1
7
S1
Set 1
8
VSS
Ground
9
S2
Set 2
10
J2
J Input 2
11
K2
K Input 2
12
R2
Reset 2
13
CP2
Clock Input 2
14
Q̅2
Inverted Output of Flip-Flop 2
15
Q2
Output of Flip-Flop 2
16
VDD
Supply Voltage
Packages:
1x CD4027BD Dual J-K Master-Slave Flip-Flop 20V 200µA IC DIP-16.
Documents:
CD4027BD Datasheet

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