Encyclopedia Entry: 74AHCT259D,112

Product Overview

Category

The 74AHCT259D,112 belongs to the category of integrated circuits (ICs) and specifically falls under the family of multiplexers/demultiplexers.

Use

This product is commonly used in digital electronic systems for data selection and routing purposes. It allows multiple input signals to be selectively routed to a single output line or vice versa.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL and CMOS logic levels
• Schmitt-trigger action on all inputs
• Balanced propagation delays
• Direct interface with standard types of circuits

Package and Quantity

The 74AHCT259D,112 is available in a small outline package (SO) with 16 pins. It is typically sold in reels or tubes containing a specified quantity of units.

Essence

The essence of the 74AHCT259D,112 lies in its ability to efficiently handle data routing and selection tasks within digital electronic systems. Its high-speed operation, low power consumption, and compatibility with various logic levels make it a versatile component in modern electronic designs.

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 +125°C
• Maximum Propagation Delay: 11 ns
• Maximum Quiescent Current: 8 μA

Pin Configuration

The 74AHCT259D,112 features 16 pins, each serving a specific function. The pin configuration is as follows:

1. A0: Data Input A0
2. A1: Data Input A1
3. A2: Data Input A2
4. A3: Data Input A3
5. A4: Data Input A4
6. A5: Data Input A5
7. A6: Data Input A6
8. A7: Data Input A7
9. G1: Enable Input G1
10. G2A: Enable Input G2A
11. G2B: Enable Input G2B
12. Y0: Multiplexer Output Y0
13. Y1: Multiplexer Output Y1
14. Y2: Multiplexer Output Y2
15. Y3: Multiplexer Output Y3
16. VCC: Positive Power Supply

Functional Features

The 74AHCT259D,112 offers the following functional features:

• 8-bit data selection and routing capability
• Independent enable inputs for multiplexing and demultiplexing operations
• Schmitt-trigger action on all inputs for improved noise immunity
• Balanced propagation delays for accurate signal routing
• Direct interface with standard types of digital circuits

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data handling.
• Low power consumption contributes to energy-efficient designs.
• Wide operating voltage range enhances compatibility with various systems.
• Schmitt-trigger action on inputs improves noise immunity.
• Balanced propagation delays ensure accurate signal routing.

Disadvantages

• Limited number of input/output lines may restrict certain applications requiring higher data throughput.
• Availability and pricing may vary depending on market demand and supplier stocks.

Working Principles

The 74AHCT259D,112 operates based on the principles of multiplexing and demultiplexing. It uses the enable inputs (G1, G2A, G2B) to control the selection of data inputs (A0-A7) and route them to the corresponding output lines (Y0-Y3). The selected data is then available at the outputs for further processing or transmission.

Application Field Plans

The 74AHCT259D,112 finds extensive use in various digital electronic systems, including but not limited to:

1. Data communication systems
2. Address decoding circuits
3. Memory modules
4. Arithmetic logic units (ALUs)
5. Microcontrollers and microprocessors
6. Industrial automation equipment
7. Automotive electronics

Alternative Models

For users seeking alternative models with similar functionality, the following options are available:

1. SN74HC259N by Texas Instruments
2. CD74HCT259E by Texas Instruments
3. MC74HCT259AN by ON Semiconductor
4. 74LS259 by Fairchild Semiconductor
5. HEF4059BP by NXP Semiconductors

These alternatives offer comparable features and can be considered based on specific requirements and availability.

In conclusion, the 74AHCT259D,112 is a versatile integrated circuit used for data selection and routing in digital electronic systems. Its high-speed operation, low power consumption, and compatibility with various logic levels make it an