TJA1049T,112

Product Overview

Category

The TJA1049T,112 belongs to the category of transceiver integrated circuits.

Use

This product is primarily used for communication and data exchange between electronic control units (ECUs) in automotive applications.

Characteristics

• High-speed communication: The TJA1049T,112 supports high-speed communication up to 1 Mbps.
• Robustness: It is designed to withstand harsh automotive environments, including temperature variations, electromagnetic interference, and voltage fluctuations.
• Low power consumption: The transceiver operates with low power consumption, making it suitable for energy-efficient automotive systems.

Package

The TJA1049T,112 is available in a small outline package (SO8) which provides ease of integration into automotive electronic systems.

Essence

The essence of the TJA1049T,112 lies in its ability to facilitate reliable and efficient communication between ECUs, enabling seamless operation of various automotive functions.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply voltage range: 4.5 V to 5.5 V
• Operating temperature range: -40°C to +125°C
• Data rate: Up to 1 Mbps
• ESD protection: ±8 kV HBM, ±2 kV CDM

Detailed Pin Configuration

The TJA1049T,112 features an 8-pin configuration:

1. CANH: CAN bus high-side input/output
2. CANL: CAN bus low-side input/output
3. VCC: Supply voltage
4. GND: Ground
5. STB: Standby mode input
6. RXD: Receive data input
7. TXD: Transmit data output
8. VREF: Reference voltage output

Functional Features

• Bus line protection: The transceiver provides protection against bus line faults, such as short circuits and overvoltage conditions.
• Wake-up capability: It supports wake-up functionality, allowing the device to be activated from a low-power mode upon receiving specific signals.
• Error detection and reporting: The TJA1049T,112 incorporates error detection mechanisms, enabling the identification and reporting of communication errors.

Advantages and Disadvantages

Advantages

• High-speed communication capability enhances system responsiveness.
• Robust design ensures reliable operation in challenging automotive environments.
• Low power consumption contributes to energy efficiency.
• Wake-up capability enables efficient power management.

Disadvantages

• Limited compatibility with older CAN protocols.
• Relatively higher cost compared to some alternative models.

Working Principles

The TJA1049T,112 operates based on the Controller Area Network (CAN) protocol. It facilitates bidirectional communication by converting digital signals into differential voltage levels on the CAN bus. The transceiver ensures signal integrity, noise immunity, and fault tolerance, thereby enabling reliable data exchange between ECUs.

Detailed Application Field Plans

The TJA1049T,112 finds extensive application in various automotive systems, including:

1. Engine control units (ECUs)
2. Transmission control units
3. Body control modules
4. Anti-lock braking systems (ABS)
5. Airbag control units
6. Instrument clusters
7. Powertrain control modules

Detailed and Complete Alternative Models

1. TJA1050: Similar to TJA1049T,112 but with extended temperature range (-40°C to +150°C).
2. MCP2551: A popular alternative with similar features and compatibility with multiple CAN protocols.
3. SN65HVD230: Another alternative offering robust communication and wide supply voltage range.

These alternative models provide options for different application requirements and system designs.

In conclusion, the TJA1049T,112 is a high-speed transceiver integrated circuit designed for reliable communication between ECUs in automotive applications. Its robustness, low power consumption, and various functional features make it a suitable choice for modern automotive systems.