Encyclopedia Entry: 74LVTH646MTCX

Product Overview

Category

The 74LVTH646MTCX belongs to the category of integrated circuits (ICs) and specifically falls under the group of bus transceivers.

Use

This IC is commonly used for bidirectional data transfer between different buses or systems. It acts as a bridge, allowing data to be transmitted in both directions.

Characteristics

• High-speed operation: The 74LVTH646MTCX offers fast data transmission rates, making it suitable for applications requiring quick data transfer.
• Low voltage operation: This IC operates at low voltage levels, typically around 3.3V, which makes it compatible with modern electronic devices.
• Tri-state outputs: It features tri-state outputs that allow the bus lines to be disconnected from the system when not in use, reducing power consumption and preventing signal interference.
• Schmitt trigger inputs: The IC incorporates Schmitt trigger inputs, which provide hysteresis and improve noise immunity.

Package and Quantity

The 74LVTH646MTCX is available in a small-sized TSSOP package. It is usually sold in reels or tubes containing multiple units, with quantities varying depending on the supplier.

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
• Maximum Data Rate: 400Mbps

Pin Configuration

The 74LVTH646MTCX 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 A1
3. I/O A2
4. GND (Ground)
5. I/O A3
6. I/O A4
7. VCC (Power Supply)
8. I/O A5
9. I/O A6
10. I/O A7
11. I/O A8
12. GND (Ground)
13. I/O B8
14. I/O B7
15. I/O B6
16. I/O B5
17. GND (Ground)
18. I/O B4
19. I/O B3
20. I/O B2
21. I/O B1
22. VCC (Power Supply)
23. I/O B0
24. OE (Output Enable) B

Functional Features

• Bidirectional data transfer: The 74LVTH646MTCX enables the exchange of data between two buses or systems in both directions.
• Tri-state outputs: It allows the bus lines to be disconnected from the system when not in use, preventing signal interference and reducing power consumption.
• Schmitt trigger inputs: The IC's Schmitt trigger inputs improve noise immunity and ensure reliable data transmission.
• High-speed operation: With a maximum data rate of 400Mbps, this IC facilitates fast data transfer.

Advantages and Disadvantages

Advantages

• Fast data transmission speeds
• Low voltage operation
• Tri-state outputs for reduced power consumption
• Schmitt trigger inputs for improved noise immunity

Disadvantages

• Limited compatibility with higher voltage systems
• Requires careful handling due to its small package size

Working Principles

The 74LVTH646MTCX operates by receiving data from one bus and transmitting it to another bidirectionally. When the output enable (OE) pin is active, the IC allows data to flow in both directions. The tri-state outputs enable the bus lines to be disconnected when the OE pin is inactive, preventing signal interference.

Application Field Plans

The 74LVTH646MTCX finds applications in various fields, including: 1. Computer systems: It facilitates data transfer between different components within a computer system, such as the CPU, memory, and peripherals. 2. Communication systems: This IC enables data exchange between different communication modules or protocols, enhancing interoperability. 3. Industrial automation: It is used in industrial control systems to connect various devices and enable efficient data transfer. 4. Automotive electronics: The IC plays a crucial role in automotive electronics, allowing data transmission between different vehicle systems.

Alternative Models

Several alternative models can be considered as substitutes for the 74LVTH646MTCX, depending on specific requirements. Some popular alternatives include: - SN74LVC245A - MC74VHC245 - CD74HCT245

These alternatives offer similar functionality and characteristics, providing flexibility in choosing the most suitable option for a particular application.

In conclusion, the 74LVTH646MTCX is a high-speed bus transceiver IC that enables bidirectional data transfer between different buses or systems. Its low voltage operation, tri