Analog Devices / Maxim Integrated MAX14882 Isolated CAN Transceiver
Analog Devices Inc. MAX14882 Isolated CAN (Controller Area Network) Transceiver is a high-speed device offering a data rate of up to 1Mbps while providing up to 5000VRMS (60s) of galvanic isolation and a continuous working voltage of up to 848VRMS. ADI MAX14882 is designed to improve communication and safety by integrating galvanic isolation between the CAN protocol controller side of the device and the physical wires of the CAN bus. Isolation improves communication by breaking ground loops and reduces noise where there are large differences in ground potential between ports.
The MAX14882 Transceiver features additional integrated protection for robust communication. The ±25V receiver input common-mode range exceeds the ISO 11898 specification requirement of -2V to +7V. The CANH and CANL IOs are fault tolerant up to ±54V and are protected from Electrostatic Discharge (ESD) up to ±15kV to GNDB on the bus side, as specified by the Human Body Model (HBM).
Interfacing with CAN-protocol controllers is simplified by the wide 3.0V to 5.5V supply voltage range (VDDA) on the controller side of the device. The supply voltage range for the CAN bus-side of the device is 4.5V to 5.5V (VDDB). An integrated transformer driver and LDO can be used, with an external transformer, to generate the isolated supply for VDDB.
The Polarity Select (POL) input simplifies field installation and troubleshooting. POL swaps the functions of the CANH and CANL IOs, allowing for simple software correction of cross-wired bus cables in the field.
ADI MAX14882 operates over the -40°C to +125°C temperature range and is available in a 16-pin wide SOIC (W SOIC) package with 8mm of creepage and clearance.
Features
- Integrated protection for more robust communication
- 5kVRMS withstand galvanic isolation (60s)
- ±25V common mode range
- ±54V fault protection
- ±15kV ESD (HBM) protection on driver outputs/receiver inputs
- A high-performance transceiver enables flexible designs
- Wide 3.0V to 5.5V supply voltage range for CAN controller interface
- Field bus polarity control (POL)
- Integrated transformer driver for power transfer to bus-side
- Integrated LDO for powering CAN bus-side
- Safety regulatory approvals (pending)
- UL1577 (basic insulation)
- cUL, according to CSA Bulletin 5A
- -40°C to +125°C operating temperature range
- +150°C junction temperature
- Lead (Pb) free and RoHS compliant
- SOIC-16 (W) package
Applications
- Building automation
- Industrial controls
- HVAC
- Switching gear
Block Diagram
Associated Products
Analog Devices / Maxim Integrated MAX14882EVKIT Evaluation Kit
Assembled and tested PCB for demonstration and evaluation of the MAX14882 Isolated CAN Transceiver.