Overview
The ISO1042-Q1 device from 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 for automotive and industrial applications, offering robust protection and high-speed data transfer. It supports both classic CAN up to 1 Mbps and CAN FD (Flexible Data Rate) up to 5 Mbps, enabling faster payload transfer. The ISO1042-Q1 is available in both SOIC-16 (DW) and SOIC-8 (DWV) packages and operates over a wide ambient temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC-8 (DWV) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Data Rate (CAN FD) | Up to 5 Mbps | - |
| DC 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 Voltage | 5000 VRMS | - |
| Working Voltage | 1060 VRMS | - |
Key Features
- AEC Q100: Qualified for automotive applications
- Grade 1: –40°C to 125°C ambient temperature
- Functional Safety-Capable
- 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, HBM ESD tolerance, Driver Dominant Time Out (TXD DTO), and undervoltage protection on VCC1 and VCC2
- Common-Mode Voltage Range: ±30 V
- 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
- Available in 16-SOIC and 8-SOIC package options
- Safety-related certifications: 7071-VPK VIOTM, 1500-VPK VIORM, 5000-VRMS Isolation, CQC, TUV, and CSA certifications
Applications
- Starter/generator systems
- Battery Management Systems (BMS)
- DC/DC converters
- On-Board (OBC) and wireless chargers
- Inverter and motor control systems
Q & A
- What is the ISO1042-Q1 device?
The ISO1042-Q1 is a galvanically-isolated controller area network (CAN) transceiver that meets the ISO11898-2 (2016) standard.
- What data rates does the ISO1042-Q1 support?
The device supports classic CAN up to 1 Mbps and CAN FD up to 5 Mbps.
- What is the operating temperature range of the ISO1042-Q1?
The device operates over a temperature range of –40°C to +125°C.
- What kind of protection does the ISO1042-Q1 offer?
The device offers ±70 V DC bus fault protection, ±16 kV HBM ESD tolerance, and undervoltage protection on VCC1 and VCC2.
- What are the package options for the ISO1042-Q1?
The device is available in both SOIC-16 (DW) and SOIC-8 (DWV) packages.
- What safety certifications does the ISO1042-Q1 have?
The device has certifications such as 7071-VPK VIOTM, 1500-VPK VIORM, 5000-VRMS Isolation, CQC, TUV, and CSA.
- What is the common-mode voltage range of the ISO1042-Q1?
The common-mode voltage range is ±30 V.
- Does the ISO1042-Q1 support multiple 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 is the isolation voltage of the ISO1042-Q1?
The device has a withstand isolation voltage of 5000 VRMS and a working voltage of 1060 VRMS.
- What are some typical applications of the ISO1042-Q1?
Typical applications include starter/generator systems, BMS, DC/DC converters, OBC and wireless chargers, and inverter and motor control systems.
- Does the ISO1042-Q1 have any functional safety capabilities?
Yes, the device is functional safety-capable with documentation available to aid in functional safety system design.
