Overview
The ISO1042BDWVR is a galvanically-isolated Controller Area Network (CAN) transceiver designed by Texas Instruments. It meets the specifications of the ISO 11898-2:2016 standard and is optimized for high-speed communication interfaces. The device offers robust protection features, including ±70-V DC bus fault protection and ±30-V common-mode voltage range, making it suitable for harsh industrial and automotive 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 ISO1042BDWVR is available in an 8-pin SOIC (DWV) package and operates over a wide ambient temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (DWV) - 8 pins |
| Operating Temperature Range (°C) | –40 to 125 |
| Data Rate | Classic CAN: up to 1 Mbps, CAN FD: up to 5 Mbps |
| Bus Fault Protection Voltage | ±70 V |
| Common-Mode Voltage Range | ±30 V |
| HBM ESD Tolerance on Bus Pins | ±16 kV |
| VCC1 Voltage Range | 1.71 V to 5.5 V |
| VCC2 Voltage Range | 4.5 V to 5.5 V |
| Isolation Withstand Voltage | 5000 V RMS for 1 minute per UL 1577 |
| Loop Delay | 152 ns |
| CMTI (Common-Mode Transient Immunity) | 100 kV/µs |
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:
- DC bus fault protection voltage: ±70 V
- HBM ESD tolerance on bus pins: ±16 kV
- Driver Dominant Time Out (TXD DTO)
- Undervoltage protection on VCC1 and VCC2
- Ideal passive, high impedance bus terminals when unpowered
- High CMTI: 100 kV/µs
- Supports 1.8-V, 2.5-V, 3.3-V, and 5.0-V logic interface to the CAN controller
- Robust Electromagnetic Compatibility (EMC):
- System-level ESD, EFT, and surge immunity
- Low emissions
- Safety-related certifications:
- 7071-VPK VIOTM and 1500-VPK VIORM per DIN VDE V 0884-11:2017-01
- 5000-V RMS Isolation for 1 Minute per UL 1577
- IEC 60950-1, IEC 60601-1, and EN 61010-1 certifications
- CQC, TUV, and CSA certifications
Applications
- Automotive Electronics: Ensures reliable data transmission while protecting against electrical interference and ground loops.
- Industrial Automation: Used in industrial automation systems where high-speed communication interfaces are required for efficient operation.
- Communication Systems: Suitable for various communication systems that require robust isolation and high-speed data transmission.
- AC and Servo Drives: Ideal for applications in AC and servo drives due to its high-speed and robust isolation features.
- Solar Inverters: Used in solar inverters to ensure reliable and high-speed data communication.
- PLC and DCS Communication Modules: Suitable for use in Programmable Logic Controllers (PLC) and Distributed Control Systems (DCS) communication modules.
- Elevators and Escalators: Used in elevator and escalator systems for reliable communication.
- Industrial Power Supplies: Applied in industrial power supplies to ensure high-speed and isolated communication.
- Battery Charging and Management: Used in battery charging and management systems for reliable and isolated communication.
Q & A
- What is the ISO1042BDWVR?
The ISO1042BDWVR is a high-performance, galvanically-isolated CAN transceiver designed by Texas Instruments, providing signal isolation for noise-sensitive applications and protection against voltage transients and ground loop currents.
- What are the key protection features of the ISO1042BDWVR?
The device features ±70-V DC bus fault protection, ±16 kV HBM ESD tolerance on bus pins, Driver Dominant Time Out (TXD DTO), and undervoltage protection on VCC1 and VCC2.
- What data rates does the ISO1042BDWVR support?
The device supports classic CAN up to 1 Mbps and CAN FD up to 5 Mbps.
- What is the common-mode voltage range of the ISO1042BDWVR?
The common-mode voltage range is ±30 V.
- What are the operating temperature and voltage ranges for the ISO1042BDWVR?
The device operates over a temperature range of –40°C to +125°C and supports VCC1 voltage ranges from 1.71 V to 5.5 V and VCC2 voltage ranges from 4.5 V to 5.5 V.
- What safety certifications does the ISO1042BDWVR have?
The device has certifications such as 7071-VPK VIOTM and 1500-VPK VIORM per DIN VDE V 0884-11:2017-01, 5000-V RMS Isolation for 1 Minute per UL 1577, and IEC 60950-1, IEC 60601-1, and EN 61010-1 certifications.
- How does the ISO1042BDWVR ensure electromagnetic compatibility?
The device ensures system-level ESD, EFT, and surge immunity and has low emissions, enhancing its electromagnetic compatibility.
- What are the typical applications of the ISO1042BDWVR?
The device is typically used in automotive electronics, industrial automation, communication systems, 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 ISO1042BDWVR protect against high voltage and noise currents?
The device uses a silicon dioxide (SiO2) insulation barrier with a withstand voltage of 5000 V RMS and prevents noise currents from the bus from entering the local ground when used with isolated power supplies.
- What is the significance of the CMTI (Common-Mode Transient Immunity) in the ISO1042BDWVR?
The device has a high CMTI of 100 kV/µs, which enhances its ability to withstand common-mode transients and ensure reliable operation in noisy environments.
