1 Features
• Meets the ISO 11898-2:2016 physical layer
standard
• Supports classic CAN up to 1 Mbps and FD
(flexible data rate) up to 5 Mbps
• Protection features
– DC Bus Fault Protection Voltage: ±58 V
– IEC ESD tolerance on bus pins: ±8 kV
– HBM ESD tolerance on bus pins: ±10 kV
– Driver dominant time out (TXD DTO)
– Undervoltage protection on VCC1 and VCC2
• Common-mode voltage range: ±12 V
• Ideal passive, high impedance bus terminals when
unpowered
• High CMTI: 85 kV/μs minimum
• VCC1 voltage range: 1.71 V to 5.5 V
– Supports 1.8-V, 2.5-V, 3.3-V and 5.0-V logic
interface to the CAN controller
• VCC2 voltage range: 4.5 V to 5.5 V
• Robust electromagnetic compatibility (EMC)
– System-Level ESD, EFT, and surge Immunity
– Low Emissions
• Ambient temperature range: –40°C to +125°C
• 8-SOIC package
• Safety-related certifications:
– All certifications planned
– VDE reinforced insulation per DIN VDE V
0884-11:2017-01
– UL 1577 component recognition program
– IEC 60950-1, IEC 62368-1, IEC 61010-1 and
GB 4943.1-2011 certifications

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

3 Description
The ISO1044B device is a galvanically-isolated
controller area network (CAN) transceiver that meets
the specifications of the ISO11898-2 (2016) standard.
The ISO1044B device offers ±58-V DC bus fault
protection and ±12-V common-mode voltage range.
The device supports up to 5-Mbps data rate in CAN
FD mode allowing much faster transfer of payload
compared to classic CAN. This device uses a silicon
dioxide (SiO2) insulation barrier with a withstand
voltage of 3000 VRMS and a working voltage of 450
VRMS. Electromagnetic compatibility has been
significantly enhanced to enable system-level ESD,
EFT, surge, and emissions compliance. Used in
conjunction with isolated power supplies, the device
protects against high voltage, and prevents noise
currents from the bus from entering the local ground.
The ISO1044B device supports a wide ambient
temperature range of –40°C to +125°C. The device is
available in the small SOIC-8 (D) package which
significantly reduces the solution size compared to a
traditional approach using optocouplers to isolate the
CAN transceiver.