Encyclopedia Entry: 74LVT646DB,112

Product Overview

Category

The 74LVT646DB,112 belongs to the category of integrated circuits (ICs) and specifically falls under the family of bus transceivers.

Use

This product is commonly used in digital systems for bidirectional data transfer between buses with different voltage levels. It acts as a buffer, allowing seamless communication between these buses.

Characteristics

• Voltage Level Translation: The 74LVT646DB,112 is designed to translate signals between two different voltage domains, ensuring compatibility.
• Bidirectional Communication: It enables data transmission in both directions, facilitating efficient communication between buses.
• High-Speed Operation: This IC operates at high speeds, making it suitable for applications that require fast data transfer.
• Low Power Consumption: The 74LVT646DB,112 is designed to consume minimal power, enhancing energy efficiency in electronic systems.

Package and Quantity

The 74LVT646DB,112 is available in a standard surface-mount package, typically in tape and reel packaging. Each reel contains a specific quantity of ICs, usually around 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Number of Channels: 8
• Data Rate: Up to 400Mbps

Pin Configuration

The 74LVT646DB,112 has a total of 24 pins, which are assigned specific functions. Here is the detailed pin configuration:

1. OE (Output Enable) A
2. I/O A0
3. I/O A1
4. GND (Ground)
5. I/O A2
6. I/O A3
7. VCC (Supply Voltage)
8. I/O A4
9. I/O A5
10. I/O A6
11. I/O A7
12. GND (Ground)
13. I/O B7
14. I/O B6
15. I/O B5
16. I/O B4
17. GND (Ground)
18. I/O B3
19. I/O B2
20. I/O B1
21. I/O B0
22. VCC (Supply Voltage)
23. I/O BDIR (Bus Direction)
24. OE (Output Enable) B

Functional Features

• Bidirectional Data Transfer: The 74LVT646DB,112 allows data to be transmitted in both directions between two buses with different voltage levels.
• Voltage Level Translation: It ensures seamless communication by translating signals from one voltage domain to another.
• Output Enable Control: The output enable pins (OE A and OE B) provide control over the direction of data flow, allowing selective activation of the transceiver.

Advantages and Disadvantages

Advantages

• Efficient Voltage Translation: The IC enables reliable communication between buses operating at different voltage levels.
• High-Speed Operation: It supports fast data transfer rates, making it suitable for applications requiring quick signal transmission.
• Low Power Consumption: The 74LVT646DB,112 is designed to minimize power consumption, contributing to energy-efficient system operation.

Disadvantages

• Limited Voltage Range: This IC is optimized for voltage translation within a specific range (2.7V to 3.6V), which may restrict its use in systems with different voltage requirements.
• Sensitivity to Noise: Like any digital circuit, the 74LVT646DB,112 can be susceptible to noise interference, which may affect its performance.

Working Principles

The 74LVT646DB,112 operates based on the principles of voltage level translation and bidirectional data transfer. It utilizes internal circuitry to convert signals from one voltage domain to another while maintaining data integrity. The output enable pins allow control over the direction of data flow, ensuring efficient communication between buses.

Application Field Plans

The 74LVT646DB,112 finds applications in various digital systems where voltage level translation is required. Some specific application areas include:

1. Microcontroller Interfacing: It enables communication between microcontrollers operating at different voltage levels.
2. Memory Interfaces: The IC facilitates data transfer between memory modules with varying voltage requirements.
3. Communication Systems: It can be used in networking equipment, allowing seamless data exchange between devices with different voltage domains.
4. Industrial Automation: The 74LVT646DB,112 aids in connecting different subsystems within industrial automation setups, ensuring compatibility and efficient data transfer.

Alternative Models

For users seeking alternative options, here are some other bus transceiver ICs that offer similar functionality:

1. SN74LVC245A
2. 74HCT640