±36V Fault Tolerant, Single 3.3V CAN Bus Transceiver with Loopback Mode


The XR31233 is a controller area network (CAN) transceiver that conforms to the ISO 11898 standard. It provides transmit and receive signaling rates up to 1Mbps between a differential CAN bus and a CAN controller.

This device is designed with cross-wire protection, overvoltage protection up to ±36V, loss of ground protection, thermal shutdown protection and common-mode transient protection of ±100V making it ideal for harsh environments used in industrial, automotive, transportation and building automation applications.

The low power consumption of the 3.3V supply makes the XR31233 CAN transceiver desirable and fully interoperable with 5V supplied transceivers on the same bus. It also offers high speed and slope control modes of operation.

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  • Single 3.3V operation
  • ±36V fault tolerance on analog bus pins
  • Extended -25V to +25V common mode operation
  • Robust ESD protection:
    • ±16kV HBM (bus pins)
    • ±8kV contact discharge (bus pins)
    • ±3kV HBM (non-bus pins)
  • Up to 1Mbps data rates
  • 11898-2 ISO compatible
  • GIFT/ICT compliant
  • 5V tolerant LVTTL I/O’s
  • 200μA low current standby mode
  • XR31233: Loopback mode
  • XR31234: Ultra low current sleep mode
    • 50nA typical
  • XR31235: Autobaud loopback mode


  • Industrial control systems
  • Motor and robotic control
  • Building and climate control (HVAC)
  • Automotive and transportation

Design Tools


Pkg Code Details Quantities Dimensions PDF
  • JEDEC Reference: MS-012
  • MSL Pb-Free: L1 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 128.4ºC/W (std); 96.8ºC/W (fused)
  • Bulk Pack Style: Tube
  • Quantity per Bulk Pack: n/a
  • Quantity per Reel: 2500
  • Quantity per Tube: 98
  • Quantity per Tray: n/a
  • Reel Size (Dia. x Width x Pitch): 330 x 12 x 8
  • Tape & Reel Unit Orientation: Pin 1 at sprocket hole.
  • Dimensions: mm
  • Length: 4.90
  • Width: 3.90
  • Thickness: 1.75
  • Lead Pitch: 1.27

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XR31233ED NSOIC8 -40 125 Active
XR31233EDTR NSOIC8 -40 125 Active
XR31233EDEVB Board Active
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Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.
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