4027 IC Dual JK Flip-Flop with Set/Reset
The CD4027BE is a dual JK flip-flop IC with set, reset, and clock inputs, designed for bistable multivibrator applications such as frequency division, counting, data storage, and toggle operations. Each flip-flop in the IC includes independent J, K, Clock, Set, and Reset inputs with complementary Q and not-Q outputs.
This IC operates using positive-edge triggering and offers high reliability in synchronous and asynchronous circuits. It provides flexible logic functionality, especially in digital designs where toggling or memory elements are required. The device functions across a wide range of supply voltages, making it compatible with both TTL and CMOS logic families.
Key Features
Dual JK flip-flop in a single IC
Independent Set, Reset, Clock, J, and K inputs
Complementary Q and Q̅ outputs
Edge-triggered operation
High noise immunity and low static power consumption
Wide operating voltage: 3V to 15V
DIP-16 package for easy prototyping
Compatible with both CMOS and TTL inputs
Pin Configuration (DIP-16)
| Pin | Label | Description |
|---|---|---|
| 1 | Q1 | Output Q of flip-flop 1 |
| 2 | Q̅1 | Inverted Output Q of flip-flop 1 |
| 3 | CLK1 | Clock input of flip-flop 1 (positive edge) |
| 4 | R1 | Reset input of flip-flop 1 (active high) |
| 5 | S1 | Set input of flip-flop 1 (active high) |
| 6 | J1 | Input J of flip-flop 1 |
| 7 | K1 | Input K of flip-flop 1 |
| 8 | GND | Ground |
| 9 | K2 | Input K of flip-flop 2 |
| 10 | J2 | Input J of flip-flop 2 |
| 11 | S2 | Set input of flip-flop 2 |
| 12 | R2 | Reset input of flip-flop 2 |
| 13 | CLK2 | Clock input of flip-flop 2 |
| 14 | Q̅2 | Inverted Output Q of flip-flop 2 |
| 15 | Q2 | Output Q of flip-flop 2 |
| 16 | VDD | Positive Power Supply |
Product Specifications
| Parameter | Value |
|---|---|
| IC Type | Dual JK Flip-Flop |
| Logic Family | CMOS |
| Package Type | DIP-16 ‘ |
| Supply Voltage | 3V – 15V |
| Max Output Current | ±1.5 mA (depending on VDD) |
| Propagation Delay | ~150ns (at 10V) |
| Input Compatibility | CMOS and TTL |
| Operating Temp Range | -55°C to +125°C |
Applications
Frequency division
Digital toggling circuits
Flip-flop based data storage
Sequential logic systems
Digital clocks and timers
Counters and registers
Arduino and microcontroller learning kits
