Encyclopedia Entry: 74FCT244ATQG

Product Overview

Category

The 74FCT244ATQG belongs to the category of integrated circuits (ICs) and specifically falls under the family of buffer/line drivers.

Use

This IC is commonly used as a non-inverting octal buffer/line driver. It provides high-speed, low-power buffering or line driving capabilities for digital signals.

Characteristics

• High-speed operation: The 74FCT244ATQG is designed to operate at high clock frequencies, making it suitable for applications requiring fast signal propagation.
• Low power consumption: This IC is optimized for low power consumption, making it energy-efficient.
• Wide supply voltage range: It can operate within a wide supply voltage range, typically between 4.5V and 5.5V.
• Output current capability: The 74FCT244ATQG can source or sink up to 24mA of current, allowing it to drive various loads.
• Schmitt-trigger inputs: The IC features Schmitt-trigger inputs, which provide hysteresis and improve noise immunity.

Package and Quantity

The 74FCT244ATQG is available in a 20-pin TSSOP (Thin Shrink Small Outline Package) package. It is commonly sold in reels containing a quantity of 250 units.

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
• Propagation Delay Time: 3.5ns (typical)
• Output Current: ±24mA

Pin Configuration

The 74FCT244ATQG has a total of 20 pins, numbered as follows:

+---+--+---+ OE --|1 +--+ 20|-- Vcc A0 --|2 19|-- B0 A1 --|3 18|-- B1 A2 --|4 17|-- B2 A3 --|5 74FCT244ATQG 16|-- B3 A4 --|6 15|-- B4 A5 --|7 14|-- B5 A6 --|8 13|-- B6 A7 --|9 12|-- B7 GND --|10 11|-- OE# +----------+

Functional Features

• Non-inverting buffer/line driver: The 74FCT244ATQG provides non-inverting functionality, ensuring that the output signal matches the input signal.
• High-speed operation: With a typical propagation delay of 3.5ns, this IC enables fast signal transmission.
• Output current capability: It can drive up to ±24mA of current, allowing it to interface with various loads.
• Schmitt-trigger inputs: The Schmitt-trigger inputs enhance noise immunity and provide better signal integrity.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient signal transmission.
• Low power consumption makes it energy-efficient.
• Wide supply voltage range allows for versatile applications.
• Schmitt-trigger inputs improve noise immunity.

Disadvantages

• Limited number of input/output channels (8 in total).
• Not suitable for applications requiring bidirectional communication.

Working Principles

The 74FCT244ATQG operates as a non-inverting buffer/line driver. It receives digital signals at its input pins (A0-A7) and amplifies them to produce corresponding buffered outputs (B0-B7). The output signals match the input signals in logic level and are capable of driving various loads.

The IC utilizes Schmitt-trigger inputs, which provide hysteresis and improve noise immunity. This ensures reliable signal transmission even in the presence of electrical noise or signal degradation.

Application Field Plans

The 74FCT244ATQG is widely used in digital systems where buffering or line driving of signals is required. Some common application fields include:

1. Microprocessor-based systems: It can be used to interface between a microprocessor and external devices, such as memory modules or peripheral components.
2. Data communication systems: The IC can be employed in data communication circuits to amplify and drive digital signals across transmission lines.
3. Industrial automation: It finds applications in industrial control systems, where it helps buffer and drive signals between different control units or sensors.
4. Test and measurement equipment: The 74FCT244ATQG can be utilized in test and measurement instruments to ensure accurate signal transmission and integrity.

Alternative Models

There are several alternative models available that offer similar functionality to the 74FCT244ATQG. Some