The HI-3000H is a 1 Mbps Controller Area Network (CAN) transceiver optimized for use in high temperature avionics applications. The device is capable of operating at extended temperature ranges of -55°C to 175°C for plastic packages and -55°C to 200°C for the ceramic CERDIP-8 package. 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 avionics applications. 

The HI-3000H 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 especially suitable for applications where ground reference voltages may vary from point to point over long distances along the CAN bus. In addition, the HI-3000H provides a SPLIT pin to give 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. 

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.

Features

• Extended Temperature Ranges -55°C to 175°C (plastic SOIC-8 package) and -55°C to 200°C (ceramic CERDIP-8 package)
• 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)
• 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

Applications

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