Encyclopedia Entry: 74ABT646CMTC

Product Overview

Category

The 74ABT646CMTC belongs to the category of integrated circuits (ICs) and specifically falls under the family of bus transceivers.

Use

This IC is primarily used for bidirectional data transfer between two buses with different voltage levels. It acts as a buffer, allowing seamless communication between systems operating at different voltage levels.

Characteristics

• Bidirectional data transfer
• Voltage level translation
• High-speed operation
• Low power consumption
• Robust design for noise immunity

Package and Quantity

The 74ABT646CMTC is available in a surface-mount package. The specific package type is CMTC, which stands for Ceramic Metric Thin Chip Carrier. It is commonly supplied in reels or tubes, with quantities varying based on customer requirements.

Essence

The essence of the 74ABT646CMTC lies in its ability to facilitate efficient and reliable data transfer between buses operating at different voltage levels, ensuring compatibility and seamless communication.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: GND to VCC
• Output Voltage Range: GND to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 200MHz
• Number of Pins: 24
• Pin Pitch: 0.65mm

Detailed Pin Configuration

1. OE (Output Enable)
2. A1 (Bus A Data Input/Output)
3. A2 (Bus A Data Input/Output)
4. A3 (Bus A Data Input/Output)
5. A4 (Bus A Data Input/Output)
6. A5 (Bus A Data Input/Output)
7. A6 (Bus A Data Input/Output)
8. GND (Ground)
9. B1 (Bus B Data Input/Output)
10. B2 (Bus B Data Input/Output)
11. B3 (Bus B Data Input/Output)
12. B4 (Bus B Data Input/Output)
13. B5 (Bus B Data Input/Output)
14. B6 (Bus B Data Input/Output)
15. VCC (Supply Voltage)
16. DIR (Direction Control)
17. OE (Output Enable)
18. A7 (Bus A Data Input/Output)
19. A8 (Bus A Data Input/Output)
20. A9 (Bus A Data Input/Output)
21. A10 (Bus A Data Input/Output)
22. A11 (Bus A Data Input/Output)
23. A12 (Bus A Data Input/Output)
24. GND (Ground)

Functional Features

• Bidirectional data transfer between Bus A and Bus B
• Voltage level translation between different voltage domains
• Direction control for controlling the data flow
• Output enable/disable functionality for bus isolation
• High-speed operation for efficient data transfer
• Noise immunity for reliable communication

Advantages and Disadvantages

Advantages

• Facilitates seamless communication between buses with different voltage levels
• High-speed operation enables efficient data transfer
• Robust design ensures noise immunity and reliability
• Output enable/disable functionality allows for bus isolation

Disadvantages

• Limited to specific voltage ranges (4.5V to 5.5V)
• Requires careful consideration of pin configuration for proper usage

Working Principles

The 74ABT646CMTC operates by receiving data from one bus (Bus A) and transmitting it to another bus (Bus B), or vice versa. The direction of data transfer is controlled by the DIR pin. The output enable (OE) pin can be used to enable or disable the output, allowing for bus isolation when needed. The IC performs voltage level translation to ensure compatibility between the two buses.

Detailed Application Field Plans

The 74ABT646CMTC finds applications in various fields where bidirectional data transfer between buses with different voltage levels is required. Some specific application areas include:

1. Industrial automation systems
2. Automotive electronics
3. Communication equipment
4. Consumer electronics
5. Medical devices

Alternative Models

• 74ACT646: Similar functionality but operates at a different voltage range (2.0V to 6.0V)
• 74HCT646: Compatible pin configuration and functionality, but operates at a lower speed compared to 74ABT646CMTC
• 74LVTH646: Low-voltage version with similar features, suitable for applications with lower voltage requirements

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