SN55HVD251 Industrial CAN Transceiver |

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Industrial CAN Transceiver



The HVD251 is intended for use in applications employing the Controller Area Network (CAN) serial communication physical layer in accordance with the ISO 11898 Standard. The HVD251 provides differential transmit capability to the bus and differential receive capability to a CAN controller at speeds up to 1 megabits per second (Mbps).

Designed for operation in harsh environments, the device features cross-wire, overvoltage and loss of ground protection to ±36 V. Also featured are overtemperature protection as well as –7-V to 12-V common-mode range, and tolerance to transients of ±200 V. The transceiver interfaces the single-ended CAN controller with the differential CAN bus found in industrial, building automation, and automotive applications.

Rs, pin 8, selects one of three different modes of operation: high-speed, slope control, or low-power mode. The high-speed mode of operation is selected by connecting pin 8 to ground, allowing the transmitter output transistors to switch as fast as possible with no limitation on the rise and fall slope. The rise and fall slope can be adjusted by connecting a resistor to ground at pin 8; the slope is proportional to the pin’s output current. Slope control with an external resistor value of 10 kΩ gives about 15-V / µs slew rate; 100 kΩ gives about 2-V/µs slew rate.

If a high logic level is applied to the Rs pin 8, the device enters a low-current standby mode where the driver is switched off and the receiver remains active. The local protocol controller returns the device to the normal mode when it transmits to the bus.


  • Drop-In Improved Replacement for the
    PCA82C250 and PCA82C251
  • Bus-Fault Protection of ±36 V
  • Meets or Exceeds ISO 11898
  • Signaling Rates(1) up to 1 Mbps
  • High Input Impedance Allows up to 120 Nodes
    on a Bus
  • Bus Pin ESD Protection Exceeds 14 kV HBM
  • Unpowered Node Does Not Disturb the Bus
  • Low-Current Standby Mode: 200-µA Typical
  • Thermal Shutdown Protection
  • Glitch-Free Power-Up and Power-Down CAN Bus
    Protection for Hot-Plugging
  • DeviceNet Vendor ID #806
    • CAN Data Buses
    • Industrial Automation
    • SAE J1939 Standard Data Bus Interface
    • NMEA 2000 Standard Data Bus Interface

(1) The signaling rate of a line is the number of voltage transitions that are made per second expressed in bps (bits per second).
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Part number Order Protocols Number of channels (#) Supply voltage(s) (V) Bus fault voltage (V) Common mode voltage (V) Signaling rate (Max) (Mbps) Low power mode HBM ESD (kV) IEC 61000-4-2 contact (+/- kV) Isolated Rating Operating temperature range (C) Package Group
SN55HVD251 Order now CAN     1     4.5 to 5.5     -36 to 36     -7 to 12     1     Silent     14         No     Catalog     -55 to 125     SON | 8    
SN65HVD1050 Order now CAN     1     4.5 to 5.5     -27 to 40     -12 to 12     1     Silent     4         No     Catalog     -40 to 125     SOIC | 8    
SN65HVD233 Order now CAN     1     3.0 to 3.6     -36 to 36     -7 to 12     1     Silent     16         No     Catalog     -40 to 125     SOIC | 8    
SN65HVD251 Order now CAN     1     4.5 to 5.5     -36 to 36     -7 to 12     1     Silent     14         No     Automotive     -40 to 125     PDIP | 8
SOIC | 8    
SN65HVD252 Order now CAN     1     4.75 to 5.25     -27 to 40     -5 to 10     1     Silent     12         No     Catalog     -40 to 85     SOIC | 8    
SN65HVD253 Order now CAN     1     4.75 to 5.25     -27 to 40     -5 to 10     1     Silent     12         No     Catalog     -40 to 85     SOIC | 8