UJA1078ATW/5V0/1J

Product Overview

• Category: Integrated Circuit (IC)
• Use: Automotive Communication and Networking
• Characteristics: High-speed, Low-power, Robust
• Package: TSSOP-14
• Essence: Transceiver IC for automotive applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Data Rate: Up to 1 Mbps
• Number of Channels: 1
• Interface: SPI (Serial Peripheral Interface)
• Protection Features: Overvoltage, Undervoltage, Overtemperature, Short-circuit, ESD

Detailed Pin Configuration

The UJA1078ATW/5V0/1J has a total of 14 pins in the TSSOP package. The pin configuration is as follows:

1. VBAT: Battery Supply Voltage
2. GND: Ground
3. CANH: CAN High Input/Output
4. CANL: CAN Low Input/Output
5. WAKE: Wake-up Input
6. STB: Standby Input
7. INH: Inhibit Input
8. VIO: Digital Supply Voltage
9. VCC: Analog Supply Voltage
10. TXD: Transmit Data Input
11. RXD: Receive Data Output
12. SDA: Serial Data Input/Output
13. SCL: Serial Clock Input
14. NC: Not Connected

Functional Features

• High-speed CAN transceiver with integrated protection features
• Supports CAN FD (Flexible Data-Rate) protocol
• Low-power consumption in standby mode
• Wake-up input for low-power operation
• Inhibit input for disabling the transceiver
• Robust protection against overvoltage, undervoltage, overtemperature, short-circuit, and electrostatic discharge (ESD)

Advantages and Disadvantages

Advantages

• High-speed data transmission up to 1 Mbps
• Supports CAN FD protocol for higher data rates
• Integrated protection features ensure reliable operation in automotive environments
• Low-power consumption in standby mode helps conserve battery life
• Wake-up input enables efficient power management
• Compact TSSOP package allows for space-saving PCB design

Disadvantages

• Limited to a single channel, not suitable for multi-channel applications
• Requires external microcontroller or host device for communication control

Working Principles

The UJA1078ATW/5V0/1J is an integrated circuit designed for automotive communication and networking using the Controller Area Network (CAN) protocol. It acts as a transceiver, facilitating the exchange of data between different nodes in a vehicle's network.

The IC operates by converting digital signals from the microcontroller into differential voltage levels on the CANH and CANL lines. It also receives differential signals from the network and converts them back into digital signals for the microcontroller to process.

The UJA1078ATW/5V0/1J incorporates various protection features to ensure reliable operation in harsh automotive environments. These include overvoltage, undervoltage, overtemperature, short-circuit, and electrostatic discharge (ESD) protection.

Detailed Application Field Plans

The UJA1078ATW/5V0/1J is widely used in automotive applications that require robust and high-speed communication. Some common application fields include:

1. Automotive Body Control Modules
2. Engine Control Units (ECUs)
3. Transmission Control Units (TCUs)
4. Infotainment Systems
5. Advanced Driver Assistance Systems (ADAS)
6. Electric Vehicle (EV) Charging Systems

Detailed and Complete Alternative Models

1. UJA1079ATW/5V0/1J: Similar to UJA1078ATW/5V0/1J, but with two channels for multi-node communication.
2. UJA1080ATW/5V0/1J: Enhanced version with additional diagnostic features and extended temperature range.

These alternative models provide similar functionality with slight variations to cater to different application requirements.

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