← All parts
74LS273 Octal D Flip-Flop
74LS273
Texas Instrumentsic logic
The 74LS273 is an octal D flip-flop with clear input, used for buffer/storage registers and shift registers.
In stock
Specifications
7- Package
- DW, J, N, W
- Operating Voltage
- 4.5 to 5.5 V V
- Supply Current
- 62-94 mA (SN74LS273J) mA
- Clock Frequency
- 0 to 30 MHz MHz
- Setup Time
- 20 ns (SN74LS273J) ns
- Data Hold Time
- 5 ns (SN74LS273J) ns
- Temperature Range
- -55°C to 125°C (SN54273), 0°C to 70°C (SN74273)
Pinout
20Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.
| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | CLR | GPIO | Clear input |
| 2 | EN | GPIO | Enable input |
| 3 | 1D | GPIO | Data input for Q0 |
| 4 | 1Q | GPIO | Output for Q0 |
| 5 | 2D | GPIO | Data input for Q1 |
| 6 | 2Q | GPIO | Output for Q1 |
| 7 | 3D | GPIO | Data input for Q2 |
| 8 | 3Q | GPIO | Output for Q2 |
| 9 | 4D | GPIO | Data input for Q3 |
| 10 | 4Q | GPIO | Output for Q3 |
| 11 | 5D | GPIO | Data input for Q4 |
| 12 | 5Q | GPIO | Output for Q4 |
| 13 | 6D | GPIO | Data input for Q5 |
| 14 | 6Q | GPIO | Output for Q5 |
| 15 | 7D | GPIO | Data input for Q6 |
| 16 | 7Q | GPIO | Output for Q6 |
| 17 | 8D | GPIO | Data input for Q7 |
| 18 | 8Q | GPIO | Output for Q7 |
| 19 | CLK | GPIO | Clock input |
| 20 | GND | GND | Ground |
Interactive pinout
Highlight:
74LS273
Click a pin to copy its name · tap a tag above to spotlight a bus.