XL65HVD231DR

The XL65HVD230 and XL65HVD231 controller area network transceivers comply with the ISO 11898-2 high-speed CAN physical layer standard. These devices are designed for data rates up to 1 Mbps and incorporate multiple protection features to enhance the robustness of the device and the CAN network. This transceiver family is designed to interface with microcontrollers, digital signal processors, and their CAN controllers or equivalent protocol controller devices powered by 3.3V supplies, for CAN serial communication physical layer applications compliant with the ISO 11898 standard. Designed for operation in harsh environments, these devices feature cross-wire protection, loss-of-ground and overvoltage protection, overtemperature protection, and a wide common-mode operating range. As the CAN physical layer, the transceiver connects a single-ended host CAN protocol controller to the differential CAN bus commonly used in industrial, building automation, and automotive applications. These devices operate over a bus common-mode range of -2V to 7V and can withstand common-mode transients of ±25V. The RS pin of the XL65HVD230 and XL65HVD231 provides three operating modes: high-speed mode, slope control mode, and low-power mode. High-speed mode is selected by connecting the RS pin to ground, allowing the transmitter output transistors to switch as fast as possible with no limitation on rise and fall slopes. The rise and fall slopes can also be adjusted by connecting a resistor in series between the RS pin and ground; the slope is proportional to the output current at this pin. With a resistance of 10 kΩ, the device slew rate is approximately 15 V/μs; with a resistance of 100 kΩ, the slew rate is approximately 2 V/μs. When a logic high is applied to the RS pin, the XL65HVD230 enters a low-current standby mode in which the driver is disabled while the receiver remains active. This mode provides lower power consumption than normal mode while still allowing the CAN controller to monitor bus activity, indicating that it should return the transceiver to normal mode or slope control mode. The host controller returns the device to transmit mode when it needs to send a message to the bus, or when bus traffic received during standby mode indicates that it needs to be ready to transmit again. The difference between the XL65HVD230 and XL65HVD231 is that when a logic high is applied to the RS pin, both the driver and receiver of the XL65HVD231 are disabled. In this sleep mode, the device cannot transmit messages to or receive messages from the bus. The device remains in sleep mode until reactivated by applying a logic low to the RS pin.

Applications

• Industrial automation, control, sensors, and drive systems
• Motor and robotics control
• Building and climate control
• Telecommunications and base station control & condition monitoring
• CAN bus standard

Key features

• Single 3.3V supply operation
• ISO 11898-2 compliant
• Bus pin ESD protection exceeding ±16 kV HBM
• High input impedance supports up to 120 nodes on the bus
• Adjustable driver slew rate for improved EMI performance
• XL65HVD230: typical low-current standby mode current of 370 μA
• XL65HVD231: typical ultra-low-current sleep mode current of 40 nA
• Designed for data rates up to 1 Mbps
• Thermal shutdown protection
• Open-circuit fail-safe design
• Glitch-free power-up and power-down protection for hot-plug applications