2.75kV, 3.5kV, and 5kV Isolated CAN Transceivers

 

Part Number	Replacement	Explanation

Description

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The MAX14878–MAX14880 family of high-speed transceivers improve communication and safety by integrating galvanic isolation between the CAN protocol controller side of the device and the physical wires of the network (CAN) bus. Isolation improves communication by breaking ground loops and reduces noise where there are large differences in ground potential between ports. The MAX14879 provides up to 2750V_RMS (60s) of galvanic isolation, while the MAX14878/MAX14880 provide up to 5000V_RMS (60s) of galvanic isolation in 16-pin SOIC and 3500V_RMS (60s) in 8-pin SOIC.

All transceivers operate up to the maximum high-speed CAN data rate of 1Mbps. The MAX14879/MAX14880 feature an integrated standby input (STB) on the isolated side of the transceiver to disable the driver and place the transceiver in a low-power standby mode. The MAX14878 does not include the standby input.

The MAX14878–MAX14880 transceivers feature integrated protection for robust communication. The receiver input common-mode range is ±25V, exceeding the ISO 11898 specification of -2V to +7V, and are fault tolerant up to ±54V. Driver outputs/receiver inputs are also protected from ±15kV electrostatic discharge (ESD) to GNDB on the bus side, as specified by the Human Body Model (HBM).

Interfacing with CAN protocol controllers is simplified by the wide 1.71V to 5.5V supply voltage range (V_DDA) on the controller side of the device. This supply voltage sets the interface logic levels between the transceiver and controller. The supply voltage range for the CAN bus side of the device is 4.5V to 5.5V (V_DDB).

The MAX14878–MAX14880 are available in a wide-body 16-pin SOIC package with 8mm of creepage and clearance. The MAX14878 is also available in an 8-pin wide-body SOIC package. These devices operate over the -40°C to +125°C temperature range.

MAX14878, MAX14879, MAX14880: Simplified Block Diagram Enlarge+

Key Features

• Integrated Protection for Robust Communication
  • 2.75kV_RMS, 3.5kV_RMS, or 5kV_RMS Withstand Isolation Voltage for 60s (Galvanic Isolation)
  • ±25V Receiver Input Common-Mode Range
  • ±54V Fault Protection on Receiver Inputs
• High-Performance Transceiver Enables Flexible Designs
  • Wide 1.71V to 5.5V Supply for the CAN Controller Interface
  • Available 16-pin and 8-pin SOIC Package Pin Configurations
  • Data Rates up to 1Mbps (Max)
  • Dominant Timeout Protection
• Safety Regulatory Approvals
  • UL According to UL1577 (Basic Insulation) (16-Pin Package Devices Only)

Applications/Uses

• Building Automation
• HVAC
• Industrial Controls
• Switching Gear