Encyclopedia Entry: 74FCT240ATQG

Product Overview

Category

The 74FCT240ATQG belongs to the category of integrated circuits (ICs) and specifically falls under the family of octal buffers/line drivers.

Use

This IC is commonly used as a buffer or line driver in digital systems to provide signal amplification and isolation between different sections of a circuit.

Characteristics

• Octal (8-bit) configuration
• Tri-state outputs
• High-speed operation
• Low power consumption
• Wide operating voltage range
• ESD protection

Package and Quantity

The 74FCT240ATQG is available in a standard 20-pin TSSOP (Thin Shrink Small Outline Package). It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to Vcc
• Output Voltage Range: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 6 ns
• Maximum Output Current: ±24 mA

Pin Configuration

The 74FCT240ATQG has a total of 20 pins, numbered from 1 to 20. The pin configuration is as follows:

+---\/---+ A1 -|1 20|- Vcc A2 -|2 19|- B1 A3 -|3 18|- B2 A4 -|4 17|- B3 A5 -|5 16|- B4 A6 -|6 15|- B5 A7 -|7 14|- B6 A8 -|8 13|- B7 GND -|9 12|- B8 OE# -|10 11|- Y1 +--------+

Functional Features

• Octal buffer/line driver with tri-state outputs
• Provides signal amplification and isolation
• Enables bidirectional communication between different sections of a circuit
• Allows multiple devices to share a common bus without interference
• High-speed operation for efficient data transfer
• Low power consumption for energy-efficient designs
• ESD protection safeguards against electrostatic discharge damage

Advantages and Disadvantages

Advantages

• High-speed operation enables fast data transfer
• Tri-state outputs allow for bidirectional communication
• Low power consumption helps conserve energy
• ESD protection ensures device durability

Disadvantages

• Limited output current may restrict use in certain applications requiring higher current capabilities
• Requires careful consideration of voltage levels to prevent damage or incorrect operation

Working Principles

The 74FCT240ATQG operates by receiving input signals on the A1-A8 pins. These signals are then amplified and isolated before being transmitted to the corresponding B1-B8 output pins. The tri-state outputs (Y1) can be enabled or disabled using the OE# (Output Enable) pin, allowing bidirectional communication.

Application Field Plans

The 74FCT240ATQG finds applications in various digital systems, including but not limited to: - Microprocessors and microcontrollers - Memory interfaces - Data buses - Communication systems - Industrial automation - Consumer electronics

Alternative Models

Some alternative models that offer similar functionality to the 74FCT240ATQG include: - SN74FCT240A from Texas Instruments - MC74FCT240A from ON Semiconductor - CD74FCT240 from Texas Instruments - 74ACT240 from Fairchild Semiconductor

These alternative models can be considered based on specific requirements, availability, and compatibility with the target system.

In conclusion, the 74FCT240ATQG is a versatile octal buffer/line driver IC that offers high-speed operation, low power consumption, and tri-state outputs. Its wide range of applications and availability of alternative models make it a popular choice in digital systems requiring signal amplification and isolation.