Encyclopedia Entry: 74ACTQ240SJ

Product Overview

Category

The 74ACTQ240SJ belongs to the category of integrated circuits (ICs). Specifically, it falls under the category of octal buffer/line drivers.

Use

This IC is primarily used as a buffer or line driver in digital systems. It provides high-speed, non-inverting buffering of signals between different parts of a circuit.

Characteristics

• High-Speed Operation: The 74ACTQ240SJ is designed to operate at high speeds, making it suitable for use in fast digital systems.
• Non-Inverting Buffering: It provides non-inverting buffering, ensuring that the output signal matches the input signal.
• Octal Configuration: This IC has eight buffer/driver channels, allowing it to handle multiple signals simultaneously.

Package and Quantity

The 74ACTQ240SJ is available in a small outline integrated circuit (SOIC) package. It comes in a surface-mount form factor with 20 pins. Typically, this IC is 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
• Maximum Propagation Delay: 6ns

Pin Configuration

The pin configuration of the 74ACTQ240SJ 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|- Y └───┘

Functional Features

• Buffering: The 74ACTQ240SJ acts as a buffer, amplifying and transmitting digital signals without altering their logic levels.
• Line Driving: It can drive signals over longer distances or to multiple devices without significant degradation.
• Output Enable (OE) Control: The OE pin allows the user to enable or disable the outputs of all eight channels simultaneously.

Advantages

• High-Speed Operation: The IC's fast propagation delay ensures efficient signal transmission in time-critical applications.
• Non-Inverting Buffering: The non-inverting nature of the buffer preserves the integrity of the input signal.
• Compact Package: The small outline package makes it suitable for space-constrained designs.

Disadvantages

• Limited Voltage Range: The 74ACTQ240SJ operates within a specific voltage range, which may restrict its use in certain applications.
• Surface-Mount Only: Being available only in surface-mount form, it may require additional considerations for circuit board design and assembly.

Working Principles

The 74ACTQ240SJ works by receiving digital signals at its input pins (A1-A8) and amplifying them to full logic levels. These amplified signals are then transmitted through the output pins (Y1-Y8). The OE pin controls the enabling or disabling of the outputs.

Application Field Plans

The 74ACTQ240SJ finds applications in various digital systems, including: - Microprocessors and microcontrollers - Data communication systems - Memory interfaces - Industrial automation systems

Alternative Models

Several alternative models with similar functionality to the 74ACTQ240SJ include: - SN74ACT240: Manufactured by Texas Instruments - MC74ACT240: Manufactured by ON Semiconductor - CD74ACT240: Manufactured by Texas Instruments

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

In conclusion, the 74ACTQ240SJ is a high-speed octal buffer/line driver IC that finds applications in digital systems. Its non-inverting buffering, compact package, and output control features make it a versatile choice for various designs.

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