Overview
The SN65HVD1040DR, produced by Texas Instruments, is a CAN (Controller Area Network) bus transceiver designed to provide differential transmit and receive capability for CAN controllers. This device meets or exceeds the specifications of the ISO 11898 standard and is optimized for operation in harsh environments. It supports signaling rates up to 1 Mbps and features robust protection mechanisms such as ±12 kV ESD protection, cross-wire, overvoltage, and loss of ground protection from –27 V to 40 V. The SN65HVD1040DR is particularly suited for automotive and industrial applications where reliability and durability are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (8) | - |
| Operating Temperature Range | –40 to 125 | °C |
| Supply Voltage (VCC) | –0.3 to 7 | V |
| Voltage at any bus terminal (CANH, CANL, SPLIT) | –27 to 40 | V |
| Receiver Output Current | –20 to 20 | mA |
| Junction Temperature | –55 to 170 | °C |
| Storage Temperature | –40 to 125 | °C |
| Signaling Rate | Up to 1 Mbps | - |
Key Features
- Improved drop-in replacement for the TJA1040
- ±12 kV ESD protection on the bus and split pins
- Low-current standby mode with bus wakeup (typically 5 µA)
- Bus-fault protection from –27 V to 40 V
- Rugged split-pin bus stability
- Dominant time-out function to prevent network blocking during hardware or software failures
- Power-up/down glitch-free bus inputs and outputs
- High input impedance with low VCC
- Monotonic outputs during power cycling
- DeviceNet™ Vendor ID Number 806
- Thermal shutdown protection and overtemperature protection
- High electromagnetic immunity (EMI) and low electromagnetic emissions (EME)
Applications
- Automotive applications (SAE J2284 High-Speed CAN, SAE J1939 Standard Data Bus Interface)
- Industrial automation (DeviceNet™ data buses, Vendor ID #806)
- Battery-operated applications and hand-held diagnostics
- GMW3122 Dual-Wire CAN Physical Layer and NMEA 2000 Standard Data Bus Interface
- ISO 11783 Standard Data Bus Interface
Q & A
- What is the primary function of the SN65HVD1040DR?
The SN65HVD1040DR is a CAN bus transceiver that provides differential transmit and receive capability for a CAN controller.
- What is the signaling rate supported by the SN65HVD1040DR?
The device supports signaling rates up to 1 Mbps.
- What kind of ESD protection does the SN65HVD1040DR offer?
The device offers ±12 kV ESD protection on the bus and split pins.
- How does the low-current standby mode work in the SN65HVD1040DR?
In low-current standby mode, the device enters a low-power bus-monitor standby mode where a dominant bit greater than 5 µs on the bus is passed by the bus-monitor circuit to the receiver output.
- What is the purpose of the dominant time-out function in the SN65HVD1040DR?
The dominant time-out function prevents the driver from blocking network communication during hardware or software failures by disabling the driver if no rising edge is seen on TXD before the time-out constant expires.
- What is the operating temperature range of the SN65HVD1040DR?
The device is characterized for operation from –40°C to 125°C.
- What types of applications is the SN65HVD1040DR suited for?
The device is suited for automotive, industrial automation, battery-operated applications, and hand-held diagnostics.
- Does the SN65HVD1040DR meet any specific industry standards?
Yes, it meets or exceeds the specifications of the ISO 11898 standard and is compliant with other standards such as SAE J2284 and ISO 11783.
- What is the DeviceNet™ Vendor ID Number for the SN65HVD1040DR?
The DeviceNet™ Vendor ID Number is 806.
- How does the STB pin affect the operation of the SN65HVD1040DR?
The STB pin selects between high-speed mode (when connected to ground) and low-power mode (when connected to VCC).
- What is the purpose of the SPLIT output in the SN65HVD1040DR?
The SPLIT output provides a VCC/2 common-mode bus voltage bias for a split-termination network.
