The 74HC107 is a JK Flip-Flop with individual J, K, Direct Clear, and Clock Pulse inputs. Output changes are initiated by the HIGH-to-LOW transition of the clock. The J and K inputs must be stable one setup time prior to the high-to-low clock transition for predictable operation. The 74HC107 IC has a wide range of working voltage, and a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL.
What is a JK Flip-Flop?
The JK Flip Flop is basically a gated RS flip flop with the addition of the clock input circuitry. When both the inputs S and R are equal to logic “1”, the invalid condition takes place. Thus to prevent this invalid condition, a clock circuit is introduced. The JK Flip Flop has four possible input combinations because of the addition of the clocked input. The four inputs are “logic 1”, ‘logic 0”. “No change’ and “Toggle”.
74HC107 Pinout
74HC107 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | J1 | Input Pin J1 |
| 2 | Q1 | Active high Output pin 1 |
| 3 | Q1′ | Active low Output pin 1 |
| 4 | K1 | Input Pin K1 |
| 5 | Q2 | Active high Output pin 2 |
| 6 | Q2′ | Active low Output pin 2 |
| 7 | GND | Ground Pin |
| 8 | J2 | Input Pin J2 |
| 9 | CP2 | Clock Pulse Input Pin 2 |
| 10 | CD2 | Reset Pin 2 |
| 11 | K2 | Input Pin K2 |
| 12 | CP1 | Clock Pulse Input Pin 1 |
| 13 | CD1 | Reset Pin 1 |
| 14 | VCC | Supply Voltage |
74HC107 Features & Specifications
| Product Attribute | Attribute Value |
| Product Category: | Flip Flops |
| Number of Circuits: | 2 |
| Logic Family: | HC |
| Logic Type: | J-K Type Flip-Flop |
| Polarity: | Inverting, Non-Inverting |
| Input Type: | CMOS, LVTTL |
| Output Type: | Differential |
| Propagation Delay Time: | 170 ns |
| High-Level Output Current: | – 5.2 mA |
| Low-Level Output Current: | 5.2 mA |
| Supply Voltage – Min: | 2 V |
| Supply Voltage – Max: | 6 V |
| Minimum Operating Temperature: | – 55 C |
| Maximum Operating Temperature: | + 125 C |
| Mounting Style: | Through Hole |
| Package / Case: | PDIP-14 |
| Packaging: | Tube |
| Function: | JK Type |
| Number of Channels: | 2 |
| Number of Input Lines: | 2 |
| Number of Output Lines: | 1 |
| Operating Supply Voltage: | 2 V to 6 V |
| Operating Temperature Range: | – 55 C to + 125 C |
| Product Type: | Flip Flops |
| Quiescent Current: | 4 uA |
| Reset Type: | Reset |
Applications
They are used in digital clocks, electronic meters, and other electronic devices that display numerical information.
