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MAX14882
5kV
Isolated CAN Transceiver
RMS
with Integrated Transformer Driver
General Description
Benefits and Features
● Integrated Protection for More Robust
The MAX14882 isolated high-speed CAN transceiver
improves communication and safety by integrating gal-
vanic isolation between the CAN-protocol controller-side
(TDX, RXD) of the device and the physical wires of the
CAN network (CANH, CANL) cable-side/bus-side of
the transceiver. Isolation improves communication by
breaking ground loops and reduces noise where large
differences in ground potentials exists between ports.
Communication
• 5kV
Withstand Galvanic Isolation (60s)
RMS
• ±25V Common Mode Range
• ±54V Fault Protection
• ±15kV ESD (HBM) Protection on Driver Outputs/
Receiver Inputs
● High-Performance Transceiver Enables Flexible
Designs
The MAX14882 provides up to 5000V
galvanic isolation and a continuous working voltage of up
(60s) of
RMS
• 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
to 848V , while operating at the maximum high-speed
RMS
CAN data rate of 1Mbps.
The MAX14882 features additional integrated protection for
robust communication. The ±25V receiver input common-
mode range exceeds the ISO 11898 specification requirement
of -2V to +7V. Additionally, 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).
• Integrated LDO for Powering CAN Bus-Side
● Safety Regulatory Approvals (Pending)
• UL1577 (Basic Insulation)
• cUL According to CSA Bulletin 5A
Ordering Information appears at end of data sheet.
Interfacing with CAN-protocol controllers is simplified by
the wide 3.0V to 5.5V supply voltage range (V
) on the
DDA
controller-side of the device. The supply voltage range for
the CAN bus-side of the device is 4.5V to 5.5V (V ). An
Simplified Block Diagram
DDB
integrated transformer driver and LDO can be used, with
an external transformer, to generate the isolated supply
3.3V
for V
.
DDB
Field installation and troubleshooting are simplified by the
polarity select (POL) input. POL swaps the functions of
the CANH and CANL IOs, allowing for simple software
correction of cross-wired bus cables in the field.
TD1
TD2
VLDO
VDDB
XFMR
DRIVER
VDDA
5V LDO
The 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.
POL
RXD
CANH
CANL
Applications
● Building Automation
● Industrial Controls
● HVAC
TXD
MAX14882
● Switching Gear
GNDA
GNDB
19-100246; Rev 0; 2/18