Overview
The SN74LS38N is a quad 2-input NAND buffer gate with open-collector outputs, manufactured by Texas Instruments. This integrated circuit is part of the 74LS series, which is widely recognized for its low-power Schottky technology. The SN74LS38N is designed for use in digital logic applications where open-collector outputs are required, such as in bus-oriented systems. Its market positioning targets engineers and designers working on digital systems, embedded systems, and industrial automation. The product stands out for its robustness, reliability, and compatibility with TTL logic levels.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Type | NAND Gate | - | Quad 2-input |
| Output Type | Open Collector | - | - |
| Supply Voltage (VCC) | 4.75 to 5.25 | V | Standard TTL |
| Operating Temperature | 0 to 70 | °C | Commercial range |
| Propagation Delay | 15 | ns | Typical |
| Input Current | 0.36 | mA | Max |
| Output Current | 8 | mA | Max |
| Package | PDIP-14 | - | Plastic DIP |
| Mounting Type | Through Hole | - | - |
| RoHS Compliance | Yes | - | - |
Key Features
- Quad 2-input NAND gate with open-collector outputs for flexible interfacing.
- Compatible with TTL logic levels, ensuring seamless integration into existing systems.
- Low power consumption, making it suitable for battery-operated devices.
- Robust design with a wide operating temperature range for industrial applications.
- Open-collector outputs allow for wired-AND configurations and bus-oriented systems.
Applications
The SN74LS38N is commonly used in digital logic circuits, including bus drivers, signal processing, and control systems. Its open-collector outputs make it ideal for interfacing with other logic families or driving high-current loads. Typical applications include industrial automation, embedded systems, and consumer electronics. In industrial settings, it is often employed in control panels and signal conditioning circuits. In consumer electronics, it can be found in devices requiring logic level translation or signal buffering.
Q & A
1. What is the purpose of open-collector outputs in the SN74LS38N?
Open-collector outputs allow for wired-AND configurations and can drive higher currents or interface with other logic families.
2. What is the supply voltage range for the SN74LS38N?
The supply voltage range is 4.75V to 5.25V, typical for TTL logic devices.
3. Is the SN74LS38N RoHS compliant?
Yes, the SN74LS38N is RoHS compliant.
4. What is the operating temperature range for this device?
The operating temperature range is 0°C to 70°C.
5. Can the SN74LS38N be used in industrial applications?
Yes, its robust design and wide temperature range make it suitable for industrial applications.
6. What is the typical propagation delay of the SN74LS38N?
The typical propagation delay is 15ns.
7. What package type does the SN74LS38N use?
The SN74LS38N is available in a PDIP-14 (Plastic Dual In-line Package) format.
8. How many gates are included in the SN74LS38N?
The SN74LS38N contains four 2-input NAND gates.
9. What is the maximum output current of the SN74LS38N?
The maximum output current is 8mA.
10. Is the SN74LS38N suitable for battery-operated devices?
Yes, its low power consumption makes it ideal for battery-operated devices.
