Encyclopedia Entry: 74ABT646CSCX

Product Overview

Category

The 74ABT646CSCX 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 communication between two buses with different voltage levels. It acts as a buffer, allowing data transmission between these buses while maintaining signal integrity.

Characteristics

• Bidirectional data transfer
• Voltage level translation
• High-speed operation
• Low power consumption
• Schmitt-trigger inputs for noise immunity

Package

The 74ABT646CSCX is available in a small outline integrated circuit (SOIC) package. This package provides a compact form factor and ease of integration into various electronic systems.

Essence

The essence of the 74ABT646CSCX lies in its ability to facilitate reliable and efficient data transfer between buses operating at different voltage levels.

Packaging/Quantity

The IC is typically supplied in reels or tubes, with each reel/tube containing a specific quantity of 74ABT646CSCX ICs. The exact packaging and quantity may vary depending on the supplier.

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: X Mbps (specific value depends on the variant)

Detailed Pin Configuration

The 74ABT646CSCX has a total of 24 pins, which are assigned specific functions. The pin configuration is as follows:

1. OE (Output Enable)
2. A1 (Bus A Control Input)
3. A2 (Bus A Control Input)
4. A3 (Bus A Control Input)
5. A4 (Bus A Control Input)
6. A5 (Bus A Control Input)
7. GND (Ground)
8. B1 (Bus B Control Input)
9. B2 (Bus B Control Input)
10. B3 (Bus B Control Input)
11. B4 (Bus B Control Input)
12. B5 (Bus B Control Input)
13. VCC (Supply Voltage)
14. DIR (Direction Control Input)
15. I/O1 (Bidirectional Data Bus A)
16. I/O2 (Bidirectional Data Bus A)
17. I/O3 (Bidirectional Data Bus A)
18. I/O4 (Bidirectional Data Bus A)
19. I/O5 (Bidirectional Data Bus A)
20. GND (Ground)
21. I/O6 (Bidirectional Data Bus B)
22. I/O7 (Bidirectional Data Bus B)
23. I/O8 (Bidirectional Data Bus B)
24. I/O9 (Bidirectional Data Bus B)

Functional Features

• Bidirectional data transfer between Bus A and Bus B
• Automatic direction control based on the DIR input
• Output enable/disable functionality for bus isolation
• Schmitt-trigger inputs for noise immunity
• Voltage level translation between different voltage domains

Advantages and Disadvantages

Advantages

• Efficient voltage level translation between buses with different voltage levels
• High-speed operation enables fast data transfer
• Low power consumption for energy-efficient designs
• Noise immunity provided by Schmitt-trigger inputs enhances signal integrity

Disadvantages

• Limited to bidirectional data transfer only
• Requires careful consideration of voltage compatibility between buses

Working Principles

The 74ABT646CSCX operates based on a combination of internal logic circuits and voltage level translators. The direction of data transfer is controlled by the DIR input, while the OE input enables or disables the output. The IC ensures reliable data transfer by employing Schmitt-trigger inputs to handle noisy signals.

Detailed Application Field Plans

The 74ABT646CSCX finds applications in various fields where bidirectional data communication between buses with different voltage levels is required. Some potential application areas include:

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

Detailed and Complete Alternative Models

• 74LVTH646: Low-voltage CMOS bus transceiver with similar functionality but operates at lower voltage levels.
• 74HCT646: High-speed CMOS bus transceiver with TTL-compatible inputs and outputs.
• SN74LVC646A: Low-voltage CMOS bus transceiver with enhanced ESD protection.

These alternative models offer similar features and can be considered based on specific design requirements.

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