Texas Instruments SN65HVD1040DG4

The SN65HVD1040DG4, produced by Texas Instruments, is a low-power CAN (Controller Area Network) bus transceiver designed for use in harsh environments. This device is an improved drop-in replacement for the TJA1040 and meets or exceeds the specifications of the ISO 11898 standard for CAN applications. It provides differential transmit and receive capability for a CAN controller at signaling rates up to 1 Mbps. The SN65HVD1040DG4 features a low-current standby mode with bus wake-up, making it suitable for battery-operated and power-sensitive applications.

• Improved Drop-in Replacement for TJA1040: Compatible with existing designs, making it easy to upgrade.
• ±12 kV ESD Protection: Enhanced protection against electrostatic discharge.
• Low-Current Standby Mode with Bus Wakeup: Consumes only 5 μA in standby, with the ability to wake up on bus activity.
• Bus-Fault Protection: Protects against overvoltage and loss of ground from –27 V to 40 V.
• Dominant State Time-Out Function: Prevents the transceiver from blocking network communication due to hardware or software failures.
• Power-Up/Down Glitch-Free Bus Inputs and Outputs: Ensures smooth operation during power cycles.
• High Input Impedance with Low VCC: Supports a wide common-mode range of –12 V to 12 V.
• Monotonic Outputs During Power Cycling: Maintains stable output levels during power transitions.
• Thermal Shutdown: Protects the device from catastrophic failure due to high temperatures.
• SPLIT Output for Split-Termination Network: Provides a reference voltage (VCC/2) for stabilizing the bus voltage.

• CAN Bus Applications: Suitable for various CAN bus standards including SAE J1939, NMEA 2000, and ISO 11783.
• Battery-Operated Applications: Ideal for devices where power consumption is critical.
• Hand-Held Diagnostics: Used in portable diagnostic tools.
• Medical Scanning and Imaging: Applied in medical equipment requiring reliable communication.
• HVAC and Security Systems: Used in heating, ventilation, and air conditioning systems, as well as security systems.
• Telecom Base Station Status and Control: Utilized in telecommunications infrastructure.
• Industrial Automation: Employed in industrial control systems and DeviceNet data buses.

1. What is the maximum signaling rate of the SN65HVD1040DG4?

   The maximum signaling rate is up to 1 Mbps.

2. What is the typical standby current of the SN65HVD1040DG4?

   The typical standby current is 5 μA.

3. What kind of ESD protection does the SN65HVD1040DG4 offer?

   The device offers ±12 kV ESD protection.

4. What is the operating temperature range of the SN65HVD1040DG4?

   The operating temperature range is from –40°C to 125°C.

5. How does the dominant state time-out function work?

   The function prevents the transceiver from blocking network communication by disabling the CAN bus driver if TXD is held dominant longer than the time-out period, and re-enabling it upon seeing a rising edge on TXD.

6. What is the purpose of the SPLIT output pin?

   The SPLIT output provides a reference voltage (VCC/2) for stabilizing the bus voltage in a split-termination network.

7. Does the SN65HVD1040DG4 have thermal shutdown protection?

   Yes, the device has thermal shutdown protection that turns off the driver outputs when the junction temperature nears 190°C.

8. What types of applications benefit from the low-power mode of the SN65HVD1040DG4?

   Battery-operated applications and other power-sensitive systems benefit from the low-power mode.

9. Is the SN65HVD1040DG4 compatible with various CAN bus standards?

   Yes, it is compatible with standards such as SAE J1939, NMEA 2000, and ISO 11783.

10. How does the device protect against bus faults?

    The device protects against overvoltage and loss of ground from –27 V to 40 V.