Overview
The SN74LS240DWRE4 is a high-performance octal buffer and line driver with 3-state outputs, manufactured by Texas Instruments. This integrated circuit (IC) belongs to the 74LS series of logic devices, known for their reliability and efficiency in digital applications. The SN74LS240DWRE4 is designed to drive high-capacitance loads and is optimized for bus-oriented systems, making it ideal for use in data communication, industrial control, and computing systems. Its market positioning targets engineers and designers working on digital logic circuits, particularly those requiring robust signal buffering and line driving capabilities. The product stands out for its low power consumption, high-speed operation, and compatibility with TTL logic levels.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Family | 74LS | - | Low-power Schottky |
| Number of Channels | 8 | - | Octal buffer/line driver |
| Output Type | 3-State | - | Active-low enable |
| Supply Voltage | 4.75 to 5.25 | V | Standard TTL levels |
| Operating Temperature | 0 to 70 | °C | Commercial grade |
| Propagation Delay | 15 | ns | Typical at 5V |
| Package / Case | SOIC-20 | - | Surface mount |
| Mounting Type | Surface Mount | - | - |
| RoHS Status | RoHS Compliant | - | - |
| Data Rate | Up to 100 | MHz | Typical |
Key Features
- Octal Buffer/Line Driver: Provides eight independent buffer/driver channels for versatile digital signal handling.
- 3-State Outputs: Allows multiple devices to share a common bus without interference.
- Low Power Consumption: Optimized for energy-efficient operation in TTL logic systems.
- High-Speed Operation: Supports data rates up to 100 MHz, ensuring rapid signal processing.
- Wide Operating Voltage Range: Compatible with standard TTL voltage levels (4.75V to 5.25V).
- Robust Design: Suitable for driving high-capacitance loads in demanding applications.
Applications
The SN74LS240DWRE4 is widely used in various digital systems, including:
- Data Communication: Facilitates signal buffering and line driving in data transmission systems.
- Industrial Control: Ensures reliable signal integrity in control and automation systems.
- Computing Systems: Supports bus-oriented architectures in microprocessors and memory systems.
- Test and Measurement Equipment: Provides precise signal handling in diagnostic and testing devices.
- Consumer Electronics: Enhances performance in digital audio, video, and gaming systems.
Q & A
1. What is the purpose of the 3-state outputs in the SN74LS240DWRE4?
The 3-state outputs allow the device to disconnect from the bus when not in use, enabling multiple devices to share a common bus without interference.
2. What is the operating voltage range of the SN74LS240DWRE4?
The operating voltage range is 4.75V to 5.25V, which is standard for TTL logic devices.
3. Can the SN74LS240DWRE4 be used in industrial environments?
Yes, it is suitable for industrial control systems due to its robust design and reliable performance.
4. What is the typical propagation delay of the SN74LS240DWRE4?
The typical propagation delay is 15 ns at 5V.
5. Is the SN74LS240DWRE4 RoHS compliant?
Yes, it is RoHS compliant, ensuring it meets environmental and safety standards.
6. What package type does the SN74LS240DWRE4 use?
It uses a SOIC-20 surface-mount package.
7. How many channels does the SN74LS240DWRE4 have?
It has 8 channels, making it an octal buffer/line driver.
8. What is the maximum data rate supported by the SN74LS240DWRE4?
The maximum data rate is up to 100 MHz.
9. Can the SN74LS240DWRE4 drive high-capacitance loads?
Yes, it is designed to drive high-capacitance loads effectively.
10. What is the operating temperature range of the SN74LS240DWRE4?
The operating temperature range is 0°C to 70°C, suitable for commercial applications.
