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. 74LS37 Quad 2-input NAND Buffer contains four independent 2-input NAND buffer gates.
74LS37 Features
- Four Independent NAND Buffer Gates
- Standard Pin Configuration
- Fast Switching Times
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS37 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 |
74LS37 Pinout Diagram
74LS37 Pin Description
| Pin No | Pin Name | Description |
| 1 | A1 | NAND Buffer 1 Input 1 |
| 2 | B1 | NAND Buffer 1 Input 2 |
| 3 | C1 | NAND Buffer 1 Output |
| 4 | A2 | NAND Buffer 2 Input 2 |
| 5 | B2 | NAND Buffer 2 Input 2 |
| 6 | C2 | NAND Buffer 2 Output |
| 7 | GND | Ground |
| 8 | C3 | NAND Buffer 3 Output |
| 9 | A3 | NAND Buffer 3 Input 1 |
| 10 | B3 | NAND Buffer Input 2 |
| 11 | C4 | NAND Buffer 4 Output |
| 12 | A4 | NAND Buffer 4 Input 1 |
| 13 | B4 | NAND Buffer 4 Input 2 |
| 14 | VCC | Positive Supply |
74LS37 Circuit
Applications
- Burglar alarm or theft alarm
- Freezer warning buzzer
- Light activated theft alarm
- Automatic watering system.
74LS37 Alternative Equivalent
74LS38
Download 74LS37 Quad 2-input NAND Buffer Datasheet from the link given below.
