Designed for industrial and automotive applications respectively, the ISO1042 and ISO1042-Q1 combine bus fault protection with common-mode transient immunity.

Today, Texas Instruments announced two new controlled area network (CAN) flexible data (FD) transceivers. One, the ISO1042 is designed for industrial applications. The other, the ISO1042-Q1, is meant for automotive applications.

These transceivers are galvanically isolated devices that offer ±70 VDC bus fault protection along with a ±30 V common-mode voltage range. A silicon dioxide insulation barrier is utilized with withstand voltage specified at 5000 VRMS and working voltage specified at 1060 VRMS. On the bus pins, the HBM ESD tolerance is ±16 kV.

Here's an overview of some of their features.



Basic and reinforced options of both the ISO1042 and ISO1042-Q1 are available in either a 10.3-mm-by-7.5-mm 16-pin DW package or in a 5.8-mm-by-7.5-mm, 8-pin DWV package. 

Both units are available with either basic or reinforced isolation options.

Surge test voltage:

  • 10,000 VPK for the Reinforced Version
  • 6,000 VPK for the Basic Version


Data Speed

  • Classic CAN up to 1 Mbps
  • FD up to 5 Mbps
  • Loop delay of only 152 ns, 215 ns maximum


Immunity and Emissions

For operation in electromagnetically noisy automotive or industrial environments.

  • Common Mode Transient Immunity (CMTI) of 85 kV/us (minimum)
  • ESD protection of +/- 8 kV


Environmental and Operational Considerations

The units operate over a temperature range of –40°C to +125°C.

Voltage ranges are as follows:

  • VCC1 voltage range is 1.71 V to 5.5 V
  • VCC2 voltage range is 4.5 V to 5.5 V


Application diagram for the ISO1042. Image used courtesy of Texas Instruments


ISO1042: Industrial Applications

The ISO1042 is intended for industrial applications and meets the ISO 11898-2:2016 and ISO 11898-5:2007 physical layer standards.

This version of the transceiver is targeted for applications such as:

  • AC and servo drives
  • Solar Inverters
  • PLC and DCS communication modules
  • Elevators and escalators
  • Industrial power supplies
  • Battery charging and management


ISO1042-Q1: Automotive Applications

The ISO1042-Q1, on the other hand, is intended for automotive applications. It meets the AEC Q100 standard for active components and is aimed at:

  • Starter/generator
  • Battery management systems
  • DC/DC converters
  • Onboard and wireless chargers
  • Inverters
  • Motor control


Evaluation Modules

Evaluation modules are available for both the ISO1042 its 16-pin SOIC package and its 8-pin versions. They are, respectively, the ISO1042DW and the ISO1042DWV.