Overview
The SN65HVD251 is a Controller Area Network (CAN) transceiver designed by Texas Instruments for use in industrial, automotive, and other harsh environment applications. It complies with the ISO 11898 standard and provides differential transmit and receive capabilities to a CAN controller at speeds up to 1 megabit per second (Mbps). This device is an improved replacement for the PCA82C250 and PCA82C251, offering enhanced protection and performance features.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (8 pins), PDIP (8 pins), WSON (8 pins) | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage (VCC) | 4.5 to 5.5 | V |
| Signaling Rate | Up to 1 Mbps | - |
| Bus-Fault Protection | ±36 V | - |
| ESD Protection | ±14 kV HBM | - |
| Common-Mode Range | -7 to 12 V | - |
| Junction Temperature | 145 | °C |
Key Features
- Drop-In Improved Replacement for the PCA82C250 and PCA82C251
- Bus-Fault Protection of ±36 V
- Meets or Exceeds ISO 11898 Standard
- Signaling Rates 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
- Slope Control and Mode Selection via Rs Pin
Applications
- CAN Data Buses
- Industrial Automation
- SAE J1939 Standard Data Bus Interface
- NMEA 2000 Standard Data Bus Interface
Q & A
- What is the SN65HVD251 used for?
The SN65HVD251 is used as a CAN transceiver in applications employing the Controller Area Network (CAN) serial communication physical layer, complying with the ISO 11898 standard.
- What are the key protection features of the SN65HVD251?
The device features bus-fault protection of ±36 V, overtemperature protection, and ESD protection exceeding 14 kV HBM.
- What are the signaling rates supported by the SN65HVD251?
The SN65HVD251 supports signaling rates up to 1 megabit per second (Mbps).
- How does the SN65HVD251 handle slope control?
The slope control can be adjusted by connecting a resistor to ground at the Rs pin, allowing for different slew rates depending on the resistor value.
- What is the operating temperature range of the SN65HVD251?
The operating temperature range is -40°C to 125°C.
- What is the typical standby current of the SN65HVD251?
The typical standby current is 200 µA.
- Does the SN65HVD251 support hot-plugging?
Yes, it provides glitch-free power-up and power-down CAN bus protection for hot-plugging.
- What are the common applications of the SN65HVD251?
Common applications include CAN data buses, industrial automation, SAE J1939 standard data bus interface, and NMEA 2000 standard data bus interface.
- How many nodes can be supported on a bus with the SN65HVD251?
The device allows up to 120 nodes on a bus due to its high input impedance.
- What is the junction temperature limit of the SN65HVD251?
The junction temperature limit is 145°C.
