Encyclopedia Entry: 74ABT240D,623

Product Overview

Category

The 74ABT240D,623 belongs to the category of integrated circuits (ICs) and specifically falls under the family of octal buffers/line drivers.

Use

This product is commonly used as a buffer or line driver in digital systems. It provides a high-speed interface between different parts of a circuit, ensuring efficient signal transmission.

Characteristics

• High-speed operation: The 74ABT240D,623 is designed to operate at high speeds, making it suitable for applications that require fast data transfer.
• Octal configuration: It features eight independent buffer gates, allowing for simultaneous handling of multiple signals.
• Tri-state outputs: The device offers tri-state outputs, enabling easy control of bus lines and minimizing interference.

Package and Quantity

The 74ABT240D,623 is available in a standard 20-pin SOIC (Small Outline Integrated Circuit) package. It is typically sold in reels containing a quantity of 250 units.

Specifications

• Supply voltage: 4.5V to 5.5V
• Input voltage: 0V to VCC
• Output voltage: 0V to VCC
• Operating temperature range: -40°C to +85°C
• Propagation delay time: 3.8ns (max)
• Output current: ±24mA

Pin Configuration

The pin configuration of the 74ABT240D,623 is as follows:

+---+--+---+ A1 -|1 +--+ 20|- VCC A2 -|2 |- B1 A3 -|3 |- B2 A4 -|4 |- B3 A5 -|5 |- B4 A6 -|6 |- B5 A7 -|7 |- B6 A8 -|8 |- B7 GND -|9 |- B8 OE1 -|10 |- Y1 OE2 -|11 |- Y2 OE3 -|12 |- Y3 OE4 -|13 |- Y4 OE5 -|14 |- Y5 OE6 -|15 |- Y6 OE7 -|16 |- Y7 OE8 -|17 |- Y8 +----------+

Functional Features

• Buffer/line driver: The 74ABT240D,623 acts as a buffer, amplifying and transmitting digital signals without altering their logic levels.
• Tri-state outputs: The tri-state outputs allow the device to be easily connected to a bus system, enabling multiple devices to share the same communication lines.
• High-speed operation: With a propagation delay time of only 3.8ns, this IC ensures efficient data transfer in time-critical applications.

Advantages and Disadvantages

Advantages

• High-speed operation enables fast data transmission.
• Tri-state outputs facilitate easy bus line control.
• Octal configuration allows for simultaneous handling of multiple signals.

Disadvantages

• Limited output current may restrict its use in certain high-power applications.
• Requires careful consideration of power supply voltage compatibility.

Working Principles

The 74ABT240D,623 operates by receiving input signals on its eight input pins (A1-A8) and amplifying them to the corresponding output pins (Y1-Y8). The tri-state outputs (OE1-OE8) control whether the outputs are active or in a high-impedance state, allowing multiple devices to share the same bus lines without interference.

Application Field Plans

The 74ABT240D,623 finds applications in various digital systems, including but not limited to: - Microprocessors and microcontrollers - Data communication systems - Memory interfaces - Industrial automation - Automotive electronics

Alternative Models

Several alternative models with similar functionality are available in the market. Some notable alternatives to the 74ABT240D,623 include: - SN74ABT240N by Texas Instruments - MC74ABT240DW by ON Semiconductor - CD74ABT240E by Texas Instruments

These alternatives can be considered based on specific requirements, availability, and cost considerations.

In conclusion, the 74ABT240D,623 is a high-speed octal buffer/line driver IC that offers tri-state outputs and is commonly used in digital systems for efficient signal transmission. Its advantages include high-speed operation, tri-state outputs, and an octal configuration, while its limitations lie in limited output current and power supply voltage compatibility. With its wide range of applications and availability of alternative models, the 74ABT240D,623 remains a versatile choice for digital circuit designers