CAN 1Mbps Shutdown/Standby 5V Extended 8-Pin SOIC

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 kO gives about 15-V / µs slew rate; 100 kO 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

APPLICATIONS

• CAN Data Buses
• Industrial Automation
• SAE J1939 Standard Data Bus Interface
• NMEA 2000 Standard Data Bus Interface