The 74LS38 IC consists of four 2-input NAND gates, each with an open-collector output. This design allows each output to either pull low or remain high-impedance, enabling the user to connect the outputs together for wired-AND logic or connect them to higher voltage sources for level shifting. The open-collector outputs make it ideal for interfacing with various logic families and performing high-speed logic operations with lower power dissipation. This makes the 74LS38 a valuable component in circuits requiring reliable, fast, and efficient digital logic operations.
Features:
- Quadruple 2-Input NAND Gates.
- Open-Collector Outputs.
- Fast Switching Speed.
- Low Power Consumption.
- Wide Operating Voltage Range.
- High Noise Immunity.
- Standardized Pinout.
Pin Configurations:
Specifications:
| Datasheet | 7438 |
| Product Category | Logic Gates |
| Series | 74 |
| Model | 7438 |
| Product | Single-Function Gates |
| Logic Function | NAND |
| Logic Type | 2-Input NAND |
| Input Type | TTL |
| Output Type | TTL |
| Number of Gates | 4 Gate |
| Number of Output Lines | 4 Output |
| Number of Input Lines | 8 Input |
| Package/Case | DIP-14 |
| Mounting Style | Through Hole |
| Low Level Output Current | 24 mA |
| High Level Output Current | 250 µA |
| Supply Voltage – Min | 4.75 V |
| Supply Voltage – Max | 5.25 V |
| Operating Supply Current | 12 µA |
| Operating Supply Voltage | 5 V |
| Propagation Delay Time | 20 ns |
| Operating Temperature | 0 °C to +70 °C |
Applications:
- Interfacing with Higher Voltage Logic.
- Wired-AND Logic.
- Bus Drivers.
- Signal Amplification.
- Timing and Control Circuits.
- Digital Signal Processing.
- Memory Systems.
Datasheet:
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