The flip flops can also be termed latches which are of different types. They include SR flip flops, JK flip flops, D flip flops, and T flip flops. We will be discussing SR flip-flops here.
SR Flip flop is used in common applications like MP3 players, Home theatres, Portable audio docks, etc. But nowadays JK and D flip-flops are used instead, due to versatility. SR latch can be built with the NAND gate or with the NOR gate. Either of them will have the input and output complemented to each other. Here for demonstrating SR Flip Flops, we are using NAND gates.
Hardware Components
The components include:
| S.no | Component | Value | Qty |
| 1. | IC (Quad NAND Gate) | SN74HC00 | 1 |
| 2. | IC Voltage Regulator | LM7805 | 1 |
| 3. | Tactile Switch | – | 3 |
| 4. | Battery | 9V | 1 |
| 5. | LED (Green, Red) | 5mm | 2 |
| 6. | Resistors | 1kὨ, 220kὨ | 2,2 |
| 7. | Breadboard | – | 1 |
| 8. | Connecting wires | – | 1 |
Truth Table
The SR flip flop has a one-bit memory size and the input keys include S and R while Q and Q’ are meant to be output keys. It uses quadruple 2 input NAND gates with 14-pin packages. Out of these 14-pin packages, 4 are of NAND gates. The power source has 0 to 8 volts of current with Vdd ranges in the form of datasheets. There is an average of 5 volts current passing through it in one turn. The supply voltage is briefly discussed below:
Circuit Diagram
