Overview
The ISO1042BDWR from Texas Instruments is a galvanically-isolated Controller Area Network (CAN) transceiver that meets the specifications of the ISO 11898-2:2016 standard. This device is designed to provide robust and reliable communication in harsh industrial environments. It supports both classic CAN up to 1 Mbps and CAN FD (Flexible Data Rate) up to 5 Mbps, enabling faster data transfer. The ISO1042BDWR features an isolation barrier made of silicon dioxide (SiO2) with a withstand voltage of 5000 VRMS and a working voltage of 1060 VRMS, ensuring high voltage protection and noise isolation.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC-16 (DW), SOIC-8 (DWV) |
| Operating Temperature Range | –40°C to +125°C |
| Data Rate | Up to 1 Mbps (classic CAN), up to 5 Mbps (CAN FD) |
| Loop Delay | 152 ns |
| DC Bus Fault Protection Voltage | ±70 V |
| HBM ESD Tolerance on Bus Pins | ±16 kV |
| Common-Mode Voltage Range | ±30 V |
| VCC1 Voltage Range | 1.71 V to 5.5 V |
| VCC2 Voltage Range | 4.5 V to 5.5 V |
| Isolation Withstand Voltage | 5000 VRMS |
| Working Voltage | 1060 VRMS |
Key Features
- Meets the ISO 11898-2:2016 physical layer standard
- Supports classic CAN up to 1 Mbps and CAN FD up to 5 Mbps
- Low loop delay: 152 ns
- Protection features including DC bus fault protection, HBM ESD tolerance, and undervoltage protection
- Ideal passive, high impedance bus terminals when unpowered
- High CMTI: 100 kV/µs
- Robust Electromagnetic Compatibility (EMC) with system-level ESD, EFT, and surge immunity
- Supports 1.8-V, 2.5-V, 3.3-V, and 5.0-V logic interface to the CAN controller
- Safety-related certifications including 7071-VPK VIOTM, 1500-VPK VIORM, and compliance with IEC 60950-1, IEC 60601-1, and EN 61010-1
Applications
- AC and servo drives
- Solar inverters
- PLC and DCS communication modules
- Elevators and escalators
- Industrial power supplies
- Battery charging and management systems
Q & A
- What is the ISO1042BDWR and what standard does it meet?
The ISO1042BDWR is a galvanically-isolated CAN transceiver that meets the ISO 11898-2:2016 standard. - What data rates does the ISO1042BDWR support?
The device supports up to 1 Mbps in classic CAN mode and up to 5 Mbps in CAN FD mode. - What is the operating temperature range of the ISO1042BDWR?
The operating temperature range is –40°C to +125°C. - What kind of protection does the ISO1042BDWR offer?
The device offers DC bus fault protection, HBM ESD tolerance, undervoltage protection, and other protection features. - What are the package options for the ISO1042BDWR?
The device is available in SOIC-16 (DW) and SOIC-8 (DWV) packages. - Does the ISO1042BDWR have any safety-related certifications?
Yes, it has certifications such as 7071-VPK VIOTM, 1500-VPK VIORM, and compliance with IEC 60950-1, IEC 60601-1, and EN 61010-1. - What is the isolation withstand voltage of the ISO1042BDWR?
The isolation withstand voltage is 5000 VRMS. - Can the ISO1042BDWR operate with different logic voltage levels?
Yes, it supports 1.8-V, 2.5-V, 3.3-V, and 5.0-V logic interfaces to the CAN controller. - What are some common applications of the ISO1042BDWR?
Common applications include AC and servo drives, solar inverters, PLC and DCS communication modules, elevators and escalators, industrial power supplies, and battery charging and management systems. - How does the ISO1042BDWR handle undervoltage conditions?
The device has undervoltage detection that places it in a protected or default mode to protect the bus during undervoltage events on the VCC1 or VCC2 supply pins.
