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. 74LS54 Quad 2-input AND/OR Inverter Gate contains 4-wide AND-OR-INVERT gates.
74LS54 Features
- Two 2-input and Two 3-input AND-OR-INVERT Gate
- Standard Pin Arrangement
- Fast Switching Times
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS54 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 |
74LS54 Pinout Diagram
74LS54 Pin Description
| Pin No | Pin Name | Description |
| 1 | A1 | AND Gate 1 Input 1 |
| 2 | B1 | AND Gate 1 Input 2 |
| 3 | A2 | AND Gate 2 Input 1 |
| 4 | B2 | AND Gate 2 Input 2 |
| 5 | C2 | AND Gate 2 Input 3 |
| 6 | Y1 | OR Inverter Gate Output |
| 7 | NC | No Connection |
| 8 | NC | No Connection |
| 9 | A3 | AND Gate 3 Input 1 |
| 10 | B3 | AND Gate 3 Input 2 |
| 11 | C3 | AND Gate 3 Input 3 |
| 12 | A4 | AND Gate 4 Input 1 |
| 13 | B4 | AND Gate 4 Input 2 |
| 14 | VCC | Positive Supply |
74LS54 Circuit
Applications
- Temperature detector circuits
- Alarm circuits
- Door Bell Switches
74LS54 Alternative Equivalent
74LS51
Download 74LS54 Quad 2-input AND/OR Inverter Gate Datasheet from the link given below.
