Encyclopedia Entry: 74AC244TTR

Product Overview

Category

The 74AC244TTR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronic systems for signal amplification and buffering purposes.

Characteristics

• The 74AC244TTR is a high-speed octal buffer/line driver with 3-state outputs.
• It operates on a wide voltage range, typically between 2V and 6V.
• This IC offers low power consumption and high noise immunity.
• It has a maximum propagation delay of 8 ns, making it suitable for high-speed applications.
• The 74AC244TTR is designed to drive heavily loaded 3-state buses or buffer memory address registers.

Package

The 74AC244TTR is available in a small-outline transistor (SOT) package.

Essence

The essence of the 74AC244TTR lies in its ability to provide efficient signal buffering and driving capabilities in digital electronic systems.

Packaging/Quantity

This IC is typically sold in reels or tubes, containing a quantity of 250 or 300 units per package.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Propagation Delay: 8 ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74AC244TTR consists of 20 pins, each serving a specific function:

1. GND: Ground
2. A1: Input A1
3. Y1: Output Y1
4. A2: Input A2
5. Y2: Output Y2
6. A3: Input A3
7. Y3: Output Y3
8. A4: Input A4
9. Y4: Output Y4
10. A5: Input A5
11. Y5: Output Y5
12. A6: Input A6
13. Y6: Output Y6
14. A7: Input A7
15. Y7: Output Y7
16. A8: Input A8
17. Y8: Output Y8
18. OE: Output Enable
19. VCC: Power Supply
20. GND: Ground

Functional Features

• The 74AC244TTR provides eight non-inverting buffer/line driver channels.
• It offers 3-state outputs, allowing multiple devices to share a common bus without interference.
• The IC has an output enable (OE) pin for controlling the state of the outputs.
• It operates at high speeds, making it suitable for time-critical applications.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data transfer.
• Low power consumption helps in reducing energy requirements.
• Wide voltage range compatibility enhances versatility.
• 3-state outputs allow for effective bus sharing.

Disadvantages

• Limited number of channels may restrict certain applications requiring more outputs.
• Sensitivity to electrostatic discharge (ESD) requires proper handling during installation.

Working Principles

The 74AC244TTR functions as a buffer/line driver by amplifying and buffering digital signals received at its inputs. It ensures that the output signals are strong enough to drive other components or devices connected to the outputs. The 3-state outputs provide flexibility in controlling the flow of data on shared buses.

Detailed Application Field Plans

The 74AC244TTR finds extensive use in various digital electronic systems, including but not limited to: - Microprocessors and microcontrollers - Memory address registers - Data buses in computer systems - Communication interfaces - Industrial automation systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74AC244TTR include: - 74HC244: High-speed CMOS octal buffer/line driver - SN74LS244: Octal buffer/line driver with 3-state outputs - CD74ACT244: Advanced CMOS octal buffer/line driver

These alternatives can be considered based on specific requirements, availability, and compatibility with the system design.

In conclusion, the 74AC244TTR is a versatile integrated circuit that provides efficient signal buffering and driving capabilities. Its high-speed operation, low power consumption, and wide voltage range make it suitable for various digital electronic applications. Proper handling and consideration of alternative models ensure optimal utilization of this IC in different system designs.