Overview
The SN74LS240N, manufactured by Texas Instruments (now part of onsemi), is a high-performance octal buffer and line driver designed for digital logic applications. This component belongs to the 74LS series, known for its low power consumption and high-speed operation. It is widely used in systems requiring signal buffering and line driving, such as data buses and communication interfaces. The SN74LS240N features inverting outputs with 3-state functionality, making it suitable for applications where multiple devices share a common bus. Its robust design and reliable performance have made it a popular choice in industrial, automotive, and consumer electronics.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Input Lines | 8 | - | |
| Output Lines | 8 | - | |
| Polarity | Inverting | - | |
| Supply Voltage (Max) | 5.25 | V | |
| Supply Voltage (Min) | 4.75 | V | |
| Operating Temperature (Max) | 70 | °C | |
| Operating Temperature (Min) | 0 | °C | |
| Package | PDIP-20 | - | Through Hole |
| Propagation Delay | 18 | ns | at 5V |
| High-Level Output Current | -15 | mA | |
| Low-Level Output Current | 24 | mA | |
| Logic Family | LS | - | |
| Logic Type | Bipolar | - | |
| Output Type | 3-State | - | |
| Unit Weight | 1.199 | g |
Key Features
- Octal buffer and line driver with inverting outputs.
- 3-state outputs for bus-oriented applications.
- Low power consumption, typical of the 74LS series.
- High-speed operation with a propagation delay of 18 ns at 5V.
- Robust design suitable for industrial and automotive environments.
- Compatible with TTL logic levels.
Applications
The SN74LS240N is versatile and finds use in various applications, including:
- Data Buses: Used to buffer and drive signals in multi-device systems, ensuring reliable data transmission.
- Communication Interfaces: Enhances signal integrity in serial and parallel communication systems.
- Industrial Automation: Provides signal conditioning in control systems and PLCs.
- Automotive Electronics: Supports robust signal handling in vehicle control units and infotainment systems.
- Consumer Electronics: Used in devices like printers, scanners, and gaming consoles for efficient signal management.
Q & A
1. What is the function of the SN74LS240N?
The SN74LS240N is an octal buffer and line driver designed to buffer and drive digital signals in electronic systems.
2. What is the significance of 3-state outputs?
3-state outputs allow the device to disconnect from the bus, enabling multiple devices to share a common bus without interference.
3. What is the operating voltage range of the SN74LS240N?
The operating voltage range is 4.75V to 5.25V.
4. What is the propagation delay of the SN74LS240N?
The propagation delay is 18 ns at 5V.
5. Is the SN74LS240N compatible with TTL logic levels?
Yes, it is fully compatible with TTL logic levels.
6. What is the maximum operating temperature of the SN74LS240N?
The maximum operating temperature is 70°C.
7. What package does the SN74LS240N come in?
It comes in a PDIP-20 (Plastic Dual In-line Package) through-hole package.
8. What is the typical application of the SN74LS240N?
It is commonly used in data buses, communication interfaces, and industrial control systems.
9. What is the logic family of the SN74LS240N?
It belongs to the LS (Low Power Schottky) logic family.
10. Is the SN74LS240N RoHS compliant?
Yes, it is RoHS compliant and lead-free.
