UJA1078TW/3V3

series introduction

# UJA1078TW/3V3 Product Series Introduction

## 1. Overview
The UJA1078TW/3V3 is a cutting - edge product series designed to meet the demanding requirements of modern automotive and industrial communication systems. It belongs to the family of CAN (Controller Area Network) transceivers, which play a crucial role in enabling reliable data communication between various electronic control units (ECUs) in a network.

## 2. Key Features

### 2.1 Electrical Characteristics
- **Low - Voltage Operation**: The "3V3" in its name indicates that it is optimized for 3.3V supply voltage. This low - voltage operation makes it highly energy - efficient, reducing power consumption in the overall system. It is well - suited for applications where power management is a critical concern, such as in battery - powered automotive subsystems or portable industrial devices.
- **High - Speed Data Transmission**: It supports high - speed CAN communication up to 1 Mbps. This allows for rapid and efficient data exchange between different nodes in the network, enabling real - time control and monitoring of various functions. For example, in an automotive engine control system, high - speed data transmission is essential for accurate and timely adjustment of engine parameters.

### 2.2 Robustness and Reliability
- **EMC Performance**: The UJA1078TW/3V3 is engineered to have excellent electromagnetic compatibility (EMC). It can effectively suppress electromagnetic interference (EMI) and is also highly immune to external EMI sources. This ensures stable communication in electrically noisy environments, such as in the engine compartment of a vehicle or near high - power industrial equipment.
- **Over - Voltage and Over - Current Protection**: The transceiver is equipped with built - in over - voltage and over - current protection mechanisms. These protections safeguard the device from damage caused by voltage spikes or excessive current, which can occur due to short - circuits or electrical faults in the system. This enhances the overall reliability and longevity of the product.

### 2.3 Thermal Management
- **Low Power Dissipation**: Thanks to its efficient design, the UJA1078TW/3V3 has low power dissipation. This results in less heat generation during operation, reducing the need for complex and bulky heat - dissipation solutions. In automotive applications, where space is often limited, this feature is particularly advantageous.

## 3. Package and Pin Configuration
- **Package Type**: The UJA1078TW/3V3 comes in a compact and industry - standard package, which simplifies the PCB (Printed Circuit Board) design process. The package is designed to provide good mechanical stability and thermal performance.
- **Pin Configuration**: The pin configuration is carefully designed to ensure easy integration with microcontrollers and other components in the system. It has dedicated pins for power supply, CAN bus communication (CAN_H and CAN_L), and control signals. This clear and well - defined pin layout makes it straightforward for engineers to connect the transceiver to the rest of the circuit.

## 4. Applications

### 4.1 Automotive Industry
- **Vehicle Control Systems**: In modern vehicles, there are numerous ECUs that need to communicate with each other. The UJA1078TW/3V3 can be used in engine control units, transmission control units, and body control modules. For example, it enables the exchange of data between the engine control unit and the anti - lock braking system (ABS) to ensure coordinated and safe vehicle operation.
- **Infotainment Systems**: It can also be employed in automotive infotainment systems to facilitate communication between different components such as the head unit, speakers, and display modules. This allows for seamless integration of features like music playback, navigation, and hands - free calling.

### 4.2 Industrial Automation
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Images for reference

32-HTSSOP

Datasheets

• UJA1078

Partlist