DM74AS646NT

Product Overview

Category

The DM74AS646NT belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for various applications such as data bus transceivers, signal amplification, and voltage level shifting.

Characteristics

• High-speed operation
• Wide operating voltage range
• Low power consumption
• Robust design for reliable performance

Package

The DM74AS646NT is available in a standard 24-pin dual in-line package (DIP), which allows for easy integration into electronic circuits.

Essence

The essence of the DM74AS646NT lies in its ability to efficiently transmit and receive digital signals while maintaining signal integrity and minimizing noise interference.

Packaging/Quantity

The DM74AS646NT is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input/Output Logic Levels: TTL-compatible
• Maximum Data Rate: 100 MHz
• Output Drive Capability: ±24 mA

Detailed Pin Configuration

The DM74AS646NT features a total of 24 pins, each serving a specific function. The pin configuration is as follows:

1. A0: Address input bit 0
2. A1: Address input bit 1
3. A2: Address input bit 2
4. A3: Address input bit 3
5. A4: Address input bit 4
6. A5: Address input bit 5
7. OE: Output enable input
8. DIR: Direction control input
9. GND: Ground
10. B0: Data bus bit 0
11. B1: Data bus bit 1
12. B2: Data bus bit 2
13. B3: Data bus bit 3
14. B4: Data bus bit 4
15. B5: Data bus bit 5
16. VCC: Supply voltage
17. B6: Data bus bit 6
18. B7: Data bus bit 7
19. B8: Data bus bit 8
20. B9: Data bus bit 9
21. B10: Data bus bit 10
22. B11: Data bus bit 11
23. DIR: Direction control input
24. OE: Output enable input

Functional Features

• Bidirectional data transmission between two independent buses
• Direction control for selecting the data flow direction
• Output enable control for enabling/disabling the output buffers
• TTL-compatible logic levels for easy integration with other digital components

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer
• Wide operating voltage range provides flexibility in various applications
• Low power consumption contributes to energy efficiency
• Robust design ensures reliable performance even in challenging environments

Disadvantages

• Limited number of data bus bits (up to 12)
• May require additional external components for specific applications

Working Principles

The DM74AS646NT operates based on the principles of digital logic. It utilizes internal circuitry to control the bidirectional data flow between two independent buses. The direction control input determines whether the data is transmitted from bus A to bus B or vice versa. The output enable input enables or disables the output buffers, allowing for flexible control over the data transmission.

Detailed Application Field Plans

The DM74AS646NT finds applications in various fields, including:

1. Data communication systems
2. Microprocessor-based systems
3. Industrial automation
4. Automotive electronics
5. Consumer electronics

In data communication systems, the DM74AS646NT can be used for data bus transceivers, enabling efficient and reliable data transfer between different components of the system. In microprocessor-based systems, it can facilitate communication between the microprocessor and other peripheral devices. In industrial automation and automotive electronics, it can be employed for signal amplification and voltage level shifting. Additionally, in consumer electronics, it can serve as an interface between different digital components.

Detailed and Complete Alternative Models

1. SN74AS646: Similar functionality with minor variations in specifications.
2. CD74AS646: Equivalent functionality with different pin configuration.
3. MC74AS646: Comparable features with slight differences in operating characteristics.

These alternative models provide similar functionality to the DM74AS646NT and can be considered as substitutes depending on specific requirements and availability.

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