Encyclopedia Entry: 74AC11244DW

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Buffer/Line Driver
• Characteristics: High-speed, low-power, non-inverting, 3-state output
• Package: Dual In-Line Package (DIP)
• Essence: Buffering and driving signals in digital systems
• Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

The 74AC11244DW is a specific model of the 74AC11244 series of ICs. It is designed to provide high-speed buffering and line driving capabilities in digital systems. The key specifications of this model are as follows:

• Supply Voltage: 2V to 6V
• Input Voltage Levels: CMOS/TTL compatible
• Output Current: ±24mA
• Propagation Delay: 5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74AC11244DW features a 24-pin Dual In-Line Package (DIP) with the following pin configuration:

+---+--+---+ A1 |1 24| VCC A2 |2 23| B1 A3 |3 22| B2 A4 |4 21| B3 A5 |5 20| B4 A6 |6 19| B5 A7 |7 18| B6 A8 |8 17| B7 GND|9 16| B8 OE |10 15| B9 Y1 |11 14| B10 Y2 |12 13| B11 +---+--+

Functional Features

The 74AC11244DW is equipped with the following functional features:

• Non-Inverting Buffering: The IC provides non-inverting buffering, ensuring that the output signal matches the input signal.
• 3-State Output: The 3-state output feature allows the IC to be effectively disconnected from the bus, reducing power consumption and enabling multiple devices to share a common bus.
• High-Speed Operation: With a propagation delay of only 5ns (typical), the IC enables fast signal transmission in digital systems.
• Wide Operating Voltage Range: The IC can operate within a voltage range of 2V to 6V, making it compatible with various digital systems.

Advantages and Disadvantages

Advantages of the 74AC11244DW include:

• High-speed operation facilitates efficient signal transmission.
• Non-inverting buffering ensures accurate signal reproduction.
• 3-state output allows for effective bus sharing and reduced power consumption.
• Wide operating voltage range enhances compatibility with different systems.

Disadvantages of the 74AC11244DW include:

• Limited output current capacity may restrict its use in certain applications.
• Sensitivity to electrostatic discharge (ESD) requires proper handling during installation.

Working Principles

The 74AC11244DW operates based on CMOS technology. It utilizes a combination of transistors and logic gates to buffer and drive signals. When an input signal is received, the IC amplifies and reproduces it at the output, maintaining the same logic level. The 3-state output feature allows the IC to disconnect from the bus when not actively driving it, preventing signal interference and conserving power.

Detailed Application Field Plans

The 74AC11244DW finds application in various digital systems where buffering and line driving are required. Some specific application fields include:

1. Microprocessors and Microcontrollers: The IC can be used to buffer and drive signals between the microprocessor/microcontroller and other peripheral devices.
2. Memory Systems: It can facilitate signal transmission between memory modules and the memory controller.
3. Communication Systems: The IC can be employed in communication systems to amplify and transmit signals between different components.
4. Industrial Automation: It finds use in industrial automation systems for buffering and driving signals between various control units.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74AC11244DW are:

1. 74HC11244: This model operates at a lower voltage range (2V to 5.5V) but provides comparable buffering and line driving capabilities.
2. 74ACT11244: With a wider operating temperature range (-55°C to +125°C), this model is suitable for more extreme environments while offering similar performance.

These alternative models can be considered based on specific requirements and system constraints.

---

Word Count: 550 words