The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS174 positive-edge-triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic. All have a direct clear input and the quad (175) versions feature complementary outputs from each flip-flop.
74LS174 Features
- Six Positive Edge Triggered Flip-Flops with Single Rail Outputs
- Buffered Clock and Direct Clear Inputs
- Individual Data Input for each Flip-Flop
- Can be used as Buffer Storage Registers
- Standard TTL Switching Voltages
74LS174 Specifications
| Supply Voltage | 4.75 – 5.25Vdc |
| Maximum Clock Frequency | 40Mhz |
| Power Dissipation | 2mW/gate @100kHz |
| Minimum Output Current | 8mA |
| Propagation Delay | 10nS |
| Fan Out (TTL Loads) | 20 |
74LS174 Pinout Diagram
74LS174 Pin Description
| Pin No | Pin Name | Description |
| 1 | CLR’ | Clear Pin (Active Low) |
| 2 | 1Q | The output of Flip Flop 1 |
| 3 | 1D | Input Of Flip Flop 1 |
| 4 | 2D | Input Of Flip Flop 2 |
| 5 | 2Q | The output of Flip Flop 2 |
| 6 | 3D | Input Of Flip Flop 3 |
| 7 | 3Q | The output of Flip Flop 3 |
| 8 | GND | Ground |
| 9 | CLK | Clock Pin |
| 10 | 4Q | The output of Flip Flop 4 |
| 11 | 4D | Input Of Flip Flop 4 |
| 12 | 5Q | The output of Flip Flop 5 |
| 13 | 5D | Input Of Flip Flop 5 |
| 14 | 6D | Input Of Flip Flop 6 |
| 15 | 6Q | The output of Flip Flop 6 |
| 16 | VCC | Positive Supply |
Applications
- Elimination switch
- Data storage
- Data transfer
- Latch
- Registers
- Counters
- Frequency division
74LS174 Alternative Equivalent
74LS175
Download 74LS174 Hex D-Type Flip-Flop with Clear Datasheet from the link given below.
