Overview
The SN74LS240NG4 is a logic chip produced by Texas Instruments, belonging to the 74LS series of low-power Schottky devices. This component is an octal buffer and line driver with 3-state outputs, designed to enhance the performance and density of memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It is particularly suited for applications requiring high fan-out, improved noise margins, and efficient bus driving capabilities. The SN74LS240NG4 is housed in a PDIP-20 package and operates within a voltage range of 4.75V to 5.25V, making it ideal for industrial and consumer electronics applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Manufacturer | Texas Instruments | - | - |
| Series | 74LS | - | Low-power Schottky |
| Package | PDIP-20 | - | - |
| Supply Voltage | 4.75 - 5.25 | V | - |
| Number of Channels | 8 | - | - |
| Output Type | 3-State | - | - |
| Propagation Delay | 18 | ns | @ 5V, 45pF |
| Operating Temperature | 0 - 70 | °C | - |
| Input Type | Bipolar | - | - |
| Output Current (High/Low) | -15 / 24 | mA | - |
Key Features
- Octal buffer and line driver with 3-state outputs for efficient bus driving.
- High fan-out capability, supporting up to 133 Ω terminated lines.
- Improved noise margins with 400 mV noise immunity.
- Low-power Schottky technology for reduced power consumption.
- Wide operating voltage range (4.75V to 5.25V) for versatile applications.
Applications
The SN74LS240NG4 is widely used in applications such as memory address driving, clock driving, and bus-oriented systems. Its high fan-out and noise immunity make it suitable for industrial automation, consumer electronics, and communication systems. Additionally, its 3-state outputs enable efficient bus driving in multi-device configurations, making it a preferred choice for data transmission and signal buffering in complex electronic systems.
Q & A
1. What is the operating voltage range of the SN74LS240NG4?
The SN74LS240NG4 operates within a voltage range of 4.75V to 5.25V.
2. What package does the SN74LS240NG4 come in?
It is housed in a PDIP-20 package.
3. What is the propagation delay of this component?
The propagation delay is 18 ns at 5V with a 45pF load.
4. What are the key features of the SN74LS240NG4?
Key features include 3-state outputs, high fan-out, improved noise margins, and low-power Schottky technology.
5. What are typical applications for the SN74LS240NG4?
Typical applications include memory address driving, clock driving, and bus-oriented systems.
6. What is the maximum operating temperature of the SN74LS240NG4?
The maximum operating temperature is 70°C.
7. How many channels does the SN74LS240NG4 support?
It supports 8 channels.
8. What is the output current capability of this component?
The output current is -15 mA (high) and 24 mA (low).
9. Is the SN74LS240NG4 suitable for bus driving applications?
Yes, its 3-state outputs and high fan-out make it ideal for bus driving.
10. What is the input type of the SN74LS240NG4?
The input type is bipolar.
