Overview
The ISO1042DW Isolated CAN Transceiver, produced by Texas Instruments, is a galvanically-isolated controller area network (CAN) transceiver that meets the specifications of the ISO11898-2 (2016) standard. This device is designed to provide high reliability and robustness in various industrial and automotive applications. The ISO1042DW supports both classic CAN up to 1 Mbps and CAN FD (Flexible Data Rate) up to 5 Mbps, enabling faster data transfer compared to traditional CAN systems.
The ISO1042DWEVM is an evaluation module (EVM) specifically designed for evaluating the performance of the ISO1042DW transceiver. This EVM includes test points for all main points necessary for evaluation, such as GND, VCC, TXD, RXD, CANH, and CANL, and supports various CAN bus configurations and protection schemes.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOIC-16 (DW) |
| Package Size | 10.30 mm × 7.50 mm |
| Data Rate | Up to 5 Mbps (CAN FD), up to 1 Mbps (Classic CAN) |
| Bus Fault Protection | ±70 V DC |
| Common-Mode Voltage Range | ±30 V |
| Loop Delay | 152 ns |
| Isolation Voltage | 5000 VRMS (withstand), 1060 VRMS (working) |
| ESD Protection | ±16 kV (HBM) |
| Ambient Temperature Range | –40°C to +125°C |
| VCC1 Voltage Range | 1.71 V to 5.5 V |
| VCC2 Voltage Range | 4.5 V to 5.5 V |
Key Features
- Galvanic isolation using a silicon dioxide (SiO2) insulation barrier with a withstand voltage of 5000 VRMS and a working voltage of 1060 VRMS.
- High bus fault protection of ±70 V and common-mode voltage range of ±30 V.
- Supports up to 5-Mbps data rate in CAN FD mode and up to 1-Mbps data rate in classic CAN mode.
- Low loop delay of 152 ns.
- Robust electromagnetic compatibility (EMC) with system-level ESD, EFT, and surge immunity.
- Undervoltage protection on VCC1 and VCC2 supply pins.
- Driver Dominant Time Out (TXD DTO) and high CMTI of 100 kV/µs.
- Ideal passive, high impedance bus terminals when unpowered.
- Safety-related certifications including 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
- Hybrid and electric vehicles
- Grid infrastructure and motor drives
- Building automation
Q & A
- What is the ISO1042DW Isolated CAN Transceiver?
The ISO1042DW is a galvanically-isolated controller area network (CAN) transceiver that meets the ISO11898-2 (2016) standard, supporting both classic CAN and CAN FD modes.
- What are the key features of the ISO1042DW?
Key features include ±70 V DC bus fault protection, ±30 V common-mode voltage range, up to 5-Mbps data rate in CAN FD mode, low loop delay, and robust EMC.
- What is the purpose of the ISO1042DWEVM evaluation module?
The ISO1042DWEVM is designed to evaluate the performance of the ISO1042DW transceiver, providing test points and various CAN bus configurations and protection schemes.
- What are the package options for the ISO1042DW?
The device is available in 16-pin SOIC (DW) and 8-pin SOIC (DWV) packages.
- What is the ambient temperature range of the ISO1042DW?
The ambient temperature range is –40°C to +125°C.
- What safety certifications does the ISO1042DW have?
The device has certifications such as IEC 60950-1, IEC 60601-1, EN 61010-1, and others, ensuring safety and reliability in various applications.
- How does the ISO1042DW protect against high voltage and noise currents?
The device uses galvanic isolation with a silicon dioxide insulation barrier and supports isolated power supplies to prevent high voltage and noise currents from affecting the local ground.
- What is the significance of the high CMTI in the ISO1042DW?
The high common-mode transient immunity (CMTI) of 100 kV/µs ensures robust operation in noisy conditions, enhancing system reliability.
- Can the ISO1042DW be used in automotive applications?
Yes, the ISO1042-Q1 version meets automotive industry standards and is suitable for use in hybrid and electric vehicles, among other automotive applications.
- What is the undervoltage protection mechanism in the ISO1042DW?
The device has undervoltage detection on VCC1 and VCC2 supply pins, placing the device in a protected or default mode during undervoltage events to prevent false transmissions.
