74LS54 Quad 2-input AND/OR Inverter Gate
Package PDIP, SOIC Series 74LS
74LS54 overview
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.
Key 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
Datasheet
54.pdf
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 pinout
| 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 applications
- Temperature detector circuits
- Alarm circuits
- Door Bell Switches
More about 74LS54
74LS54 Alternative Equivalent
74LS51
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