74LS37 Quad 2-input NAND Buffer
Package PDIP, SOIC Series 74LS
74LS37 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. 74LS37 Quad 2-input NAND Buffer contains four independent 2-input NAND buffer 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
37.pdf
74LS37 features
- Four Independent NAND Buffer Gates
- Standard Pin Configuration
- Fast Switching Times
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS37 pinout
| 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 applications
- Burglar alarm or theft alarm
- Freezer warning buzzer
- Light activated theft alarm
- Automatic watering system.
More about 74LS37
74LS37 Alternative Equivalent
74LS38
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