SN74LS244NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: TTL Logic, Octal 3-State Non-Inverting Buffer/Line Driver
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: High-speed, low-power buffer with 3-state outputs
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• High-Level Input Voltage: 2.0V min
• Low-Level Input Voltage: 0.8V max
• High-Level Output Voltage: 2.7V min
• Low-Level Output Voltage: 0.5V max
• Maximum Operating Frequency: 20MHz
• Propagation Delay Time: 9ns max
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LS244NSR has a total of 20 pins, which are assigned as follows:

1. A1 - Input 1
2. Y1 - Output 1
3. B1 - Input 2
4. GND - Ground
5. A2 - Input 3
6. Y2 - Output 3
7. B2 - Input 4
8. VCC - Power Supply
9. Y3 - Output 4
10. A3 - Input 5
11. B3 - Input 6
12. Y4 - Output 6
13. A4 - Input 7
14. B4 - Input 8
15. Y5 - Output 8
16. GND - Ground
17. Y6 - Output 9
18. A6 - Input 10
19. B6 - Input 11
20. Y7 - Output 11

Functional Features

• Octal non-inverting buffer with 3-state outputs
• TTL (Transistor-Transistor Logic) compatible inputs and outputs
• High-speed operation with low power consumption
• Allows bidirectional flow of data
• Enables multiple devices to share a common bus

Advantages and Disadvantages

Advantages: - Fast propagation delay time for quick signal transmission - Low power consumption for energy efficiency - 3-state outputs allow for bus sharing and efficient data transfer

Disadvantages: - Limited voltage range (4.75V to 5.25V) - Not suitable for high-frequency applications above 20MHz

Working Principles

The SN74LS244NSR is an octal buffer/line driver IC that operates on TTL logic levels. It takes input signals from the A1-A6 and B1-B6 pins and provides corresponding output signals at the Y1-Y7 pins. The 3-state outputs allow the device to be in one of three states: high impedance, logic high, or logic low. This feature enables multiple devices to share a common bus without interfering with each other.

Detailed Application Field Plans

The SN74LS244NSR is commonly used in various digital systems and applications, including:

1. Microprocessor-based systems
2. Data communication systems
3. Memory address drivers
4. Bus interface circuits
5. Industrial control systems
6. Automotive electronics
7. Robotics and automation

Detailed and Complete Alternative Models

Some alternative models that can be considered as replacements for the SN74LS244NSR are:

1. SN74HC244N - Octal Buffer/Line Driver, CMOS Logic, DIP package
2. CD74HCT244E - Octal Buffer/Line Driver, CMOS Logic, PDIP package
3. MC74ACT244DW - Octal Buffer/Line Driver, Advanced CMOS Logic, SOIC package
4. 74F244SC - Octal Buffer/Line Driver, Fast CMOS Logic, SOIC package

These alternative models offer similar functionality and can be used as drop-in replacements for the SN74LS244NSR in various applications.

In conclusion, the SN74LS244NSR is an octal buffer/line driver IC that provides fast and efficient signal buffering with 3-state outputs. Its TTL compatibility, low power consumption, and versatile application field make it a popular choice in digital systems. However, its limited voltage range and maximum operating frequency should be considered when selecting this IC for specific applications.