What Is 74LS04?
The 74LS04 is a digital logic gate integrated circuit that features six inverters, also known as hex inverters. Each inverter within the chip has an output signal that is the inverse of its input signal. The six inverters share a common power supply and ground terminal, while all other connections are independent. The chip also has a certain degree of amplification capability for manually loaded output signals. Inverters are circuits capable of reversing the phase of input signals by 180 degrees. This type of circuit finds applications in analog circuits such as audio amplifiers, clock oscillators, and more.
74LS04 Pinout
74LS04 Pin Description
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | A1 | Input for the first inverter |
| 2 | Y1 | Output of the first inverter |
| 3 | A2 | Input for the second inverter |
| 4 | Y2 | Output of the second inverter |
| 5 | A3 | Input for the third inverter |
| 6 | Y3 | Output of the third inverter |
| 7 | GND | Ground: Connected to the ground or 0V supply |
| 8 | A4 | Input for the fourth inverter |
| 9 | Y4 | Output of the fourth inverter |
| 10 | A5 | Input for the fifth inverter |
| 11 | Y5 | Output of the fifth inverter |
| 12 | A6 | Input for the sixth inverter |
| 13 | Y6 | Output of the sixth inverter |
| 14 | Vcc | Positive power supply: Connected to +5V supply |
74LS04 Features
- Low power consumption
- Six independent inverters
- Compatible with TTL inputs and outputs
- Small size with a DIP package
- Wide operating voltage range
- High noise immunity
- Fast switching speed
- RoHS compliant
74LS04 Specifications
- Supply voltage: 4.75V to 5.25V
- Output current (Min): 8mA
- Operating frequency (Max): 33 MHz
- Operating temperature (Max): 70°C
- Propagation delay: 15ns
- Fan Out (TTL Loads): 20
- Package: DIP-14
74LS04 Alternative Equivalent
SN74LS04, MC74LS04, HD74LS04, CD74LS04, 74HCT04, 74HC04, 74AC04, 74HC14, etc.
74LS04 Applications
- LEDs or small motors
- Digital signal inversion
- Logic level conversion
- Digital clock circuits
- Data processing circuits
- Signal amplification circuits
