Encyclopedia Entry: 74AC240MTCX

Product Overview

Category

The 74AC240MTCX belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital logic devices.

Use

This IC is commonly used in electronic circuits for signal processing, data manipulation, and control applications. It serves as a buffer or line driver for transferring digital signals between different parts of a circuit.

Characteristics

• The 74AC240MTCX operates on a supply voltage range of 2V to 6V.
• It offers high-speed performance with a propagation delay of typically 5 nanoseconds.
• This IC has a wide operating temperature range of -40°C to +85°C, making it suitable for various environments.
• It features a tri-state output, allowing multiple devices to share a common bus without interference.

Package and Quantity

The 74AC240MTCX is available in a small outline surface-mount package (TSSOP-20). It is typically sold in reels or tubes containing a quantity of 250 units.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage High Level: 2V to VCC
• Input Voltage Low Level: GND to 0.8V
• Output Voltage High Level: VCC - 0.5V
• Output Voltage Low Level: 0.5V
• Propagation Delay: 5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The 74AC240MTCX has a total of 20 pins arranged in a TSSOP package. The pin configuration is as follows:

+---+--+---+ A1 -|1 +--+ 20|- VCC A2 -|2 |- A0 B1 -|3 |- A3 B2 -|4 |- A2 C1 -|5 |- A1 C2 -|6 |- OE# GND -|7 |- Y1 D1 -|8 |- Y2 D2 -|9 |- Y3 E1 -|10 |- Y4 E2 -|11 |- Y5 F1 -|12 |- Y6 F2 -|13 |- Y7 G1 -|14 |- Y8 G2 -|15 |- GND VCC -|16 |- G3 H1 -|17 |- G2 H2 -|18 |- G1 OE# -|19 |- F2 +----------+

Functional Features

The 74AC240MTCX is an octal buffer/line driver with 3-state outputs. Its key functional features include:

• Eight input/output (I/O) channels for bidirectional data transfer.
• Tri-state outputs that can be disabled using the Output Enable (OE#) pin.
• High-speed operation, allowing efficient signal transmission in digital circuits.
• Compatibility with various logic families, including TTL and CMOS.

Advantages and Disadvantages

Advantages

• High-speed performance enables rapid data transfer.
• Tri-state outputs allow multiple devices to share a common bus without interference.
• Wide operating temperature range makes it suitable for diverse environments.
• Compatibility with different logic families enhances versatility in circuit design.

Disadvantages

• Limited number of I/O channels (eight), which may restrict certain applications requiring more connections.
• Availability only in surface-mount package, which may pose challenges for hand soldering or prototyping.

Working Principles

The 74AC240MTCX operates based on the principles of digital logic. It acts as a buffer or line driver, receiving input signals and amplifying them to drive output signals. The tri-state outputs provide flexibility by allowing the device to be effectively disconnected from the bus when not in use, preventing signal interference.

Application Field Plans

The 74AC240MTCX finds applications in various fields, including:

1. Microprocessor-based systems: It can be used to interface microprocessors with peripheral devices, such as memory modules or input/output devices.
2. Communication systems: This IC facilitates signal routing and buffering in communication circuits, ensuring reliable data transmission.
3. Industrial automation: It plays a crucial role in controlling and monitoring electronic components in industrial automation systems.
4. Automotive electronics: The 74AC240MTCX is utilized in automotive applications for signal conditioning, data processing, and control functions.

Alternative Models

Several alternative models are available that offer similar functionality to the 74AC240MTCX. Some notable alternatives include:

• SN74ACT240N
• CD