The HI-3002 is a 1 Mbps Controller Area Network (CAN) transceiver optimized for use in aerospace applications. It interfaces between a CAN protocol controller and the physical wires of the bus in a CAN network. Differential output amplitude and current drive capability are specifically enhanced to meet the needs of long cable runs typical of aerospace applications.

The HI-3002 supports two modes of operation: Normal Mode and Standby Mode. The Standby Mode is a very low-current mode which continues to monitor bus activity and allows an external controller to manage wake-up.

Superior common-mode receiver performance makes the device specially suitable for applications where ground reference voltages may vary from point to point over long distances along the CAN bus. In addition, the HI-3002 comes in a compact 4mm x 4mm 16-pin QFN package and provides both a SPLIT pin and a VIO supply voltage pin. The SPLIT pin gives an output reference voltage of VDD/2 which can be used for stabilizing the recessive bus level when the split termination technique is used to terminate the bus. The VIO pin allows the device to interface directly with controllers with 3.3V supply voltages.

A TXD dominant time-out feature also protects the bus from being driven into a permanent dominant state (so called “babbling idiot”) if pin TXD becomes permanently low due to application failure.

The device also has short circuit protection to +/-58V on CANH, CANL and SPLIT pins and ESD protection to +/- 6kV on all pins.

The device is available in industrial -40°Cto +85°C and extended -55°C to +125°C temperature ranges. “RoHS compliant” lead-free options are also available with optional burn-in for the extended temperature range.

Features

• Compatible with ARINC 825 and ISO 11898-5 standards
• Signaling rates up to 1Mbit/s
• Internal VDD/2 voltage source available to stabilize the recessive bus level if split termination is used (SPLIT pin)
• VIO input allows for direct interfacing with 3.3V controllers
• Detection of permanent dominant on TXD pin (babbling idiot protection)
• High impedance allows connection of up to 120 nodes
• Input levels compatible with 3.3V or 5V controllers
• CANH, CANL and SPLIT pins short-circuit proof to +/-58V
• Will not disturb the bus if unpowered
• Extended temperature range and burn-in options for high reliability applications

Applications

• ARINC 825 and CANaerospace Avionics
• Aerospace Controller Area Networks (CAN)
• Industrial Automation and Process Control