Holt Integrated Circuits' HI-3000H high-temperature transceiver family is capable of operation up to 200°C in an 8-pin CERDIP package, and up to 175°C in an 8-pin plastic SOIC package.

The devices support two modes of operation: Normal Mode and Standby Mode. The Standby Mode is a very-low-current mode that continues to monitor bus activity, allowing the 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 V_DD/2. This can be used for stabilizing the recessive bus level when the split termination technique is used to terminate the bus.

The devices also feature a TXD dominant time-out feature to protect the bus from being driven into a permanent dominant state if the TXD pin becomes permanently low, due to application failure.

The HI-3001H is identical to the HI-3000H, except that the SPLIT pin is substituted with a VIO supply voltage pin. This allows the HI-3001H to interface digital I/O directly with 3.3 V controllers.

• Extended temperature ranges -55°C to 200°C (ceramic CERDIP-8 package) and -55°C to 175°C (plastic SOIC-8 package)
• Compatible with ARINC 825 and ISO 11898-5 standards
• Signaling rates up to 1 Mbit/s
• Internal V_DD/2 voltage source available to stabilize the recessive bus level if split termination is used (SPLIT pin, HI-3000H)
• VIO input allows for direct interfacing with 3.3 V controllers (VIO pin, HI-3001H)
• Detection of permanent dominant on TXD pin (babbling idiot protection)
• High impedance allows connection of up to 120 nodes
• Input levels compatible with 3.3 V or 5 V controllers
• CANH, CANL and SPLIT pins short-circuit proof to +/-58 V
• Will not disturb the bus if unpowered

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