Encyclopedia Entry: 74ABT657DB,112

Product Overview

Category

The 74ABT657DB,112 belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital logic ICs.

Use

This product is primarily used for data bus multiplexing and demultiplexing applications in various electronic devices and systems.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Schmitt-trigger inputs for noise immunity
• Output capability: balanced propagation delays and transition times

Package

The 74ABT657DB,112 is available in a standard 24-pin SSOP (Shrink Small Outline Package) package.

Essence

The essence of this product lies in its ability to efficiently handle data bus multiplexing and demultiplexing tasks, enabling effective data transmission and control within electronic systems.

Packaging/Quantity

The 74ABT657DB,112 is typically packaged 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
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 7 ns
• Maximum Input Capacitance: 10 pF
• Maximum Output Current: ±32 mA

Detailed Pin Configuration

The 74ABT657DB,112 has a total of 24 pins, each serving a specific function. The pin configuration is as follows:

1. A0 (Input)
2. A1 (Input)
3. A2 (Input)
4. A3 (Input)
5. A4 (Input)
6. A5 (Input)
7. A6 (Input)
8. A7 (Input)
9. OE (Output Enable, Input)
10. SEL (Select, Input)
11. B0 (Input/Output)
12. B1 (Input/Output)
13. B2 (Input/Output)
14. B3 (Input/Output)
15. B4 (Input/Output)
16. B5 (Input/Output)
17. B6 (Input/Output)
18. B7 (Input/Output)
19. GND (Ground)
20. VCC (Power Supply)
21. C0 (Output)
22. C1 (Output)
23. C2 (Output)
24. C3 (Output)

Functional Features

The 74ABT657DB,112 offers the following functional features:

• Data bus multiplexing and demultiplexing
• Output enable control for data transmission control
• Select input for choosing between multiplexing and demultiplexing modes
• High-speed operation for efficient data handling
• Schmitt-trigger inputs for improved noise immunity

Advantages and Disadvantages

Advantages

• High-speed operation allows for quick data transmission.
• Low power consumption helps in energy-efficient designs.
• Wide operating voltage range provides flexibility in various applications.
• Schmitt-trigger inputs enhance noise immunity, ensuring reliable data handling.

Disadvantages

• Limited number of data lines (8) may restrict its use in applications requiring a higher number of data channels.
• The SSOP package may not be suitable for all PCB layouts or assembly processes.

Working Principles

The 74ABT657DB,112 operates based on the principles of digital logic. It utilizes multiplexers and demultiplexers to efficiently route data between different sources and destinations. The select input determines whether the device functions as a multiplexer or a demultiplexer. When used as a multiplexer, it combines multiple input signals into a single output line. In demultiplexer mode, it distributes a single input signal to multiple output lines.

Detailed Application Field Plans

The 74ABT657DB,112 finds applications in various electronic systems that require data bus multiplexing and demultiplexing capabilities. Some specific application fields include:

1. Communication Systems: Used for efficient data routing in communication networks and protocols.
2. Industrial Automation: Enables effective control and monitoring of data buses in industrial automation systems.
3. Automotive Electronics: Facilitates data transmission and control in automotive electronics, such as infotainment systems and vehicle diagnostics.
4. Computer Peripherals: Utilized in devices like printers, scanners, and external storage systems for data handling and control.

Detailed and Complete Alternative Models

There are several alternative models available in the market that offer similar functionality to the 74ABT657DB,112. Some notable alternatives include:

• 74HC257: A CMOS-based quad 2-input multiplexer/demultiplexer IC.
• CD4051B: An analog multiplexer/demultiplexer IC with 8 channels.
• SN74LS151