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HIP7020 - J1850 Bus Transceiver For Multiplex Wiring Systems

Description

The HIP7020 IC is an Integrated I/O Bus Transceiver designed for the SAE Standard J1850 Class B Data Communication Network Interface.

The Bus transmits and receives data on a single wire using a 10.4kHz VPWM (Variable Pulse Width Modulated) signal.

Features

  • J1850 Bus Transceiver for MX Wiring.
  • 5V CMOS/TTL Logic Interface.
  • Current Controlled Transmitter Driver.
  • Controlled Rise/Fall Time of Bus Drive for Both Voltage and Current.
  • Bus Drive Capability to Less Than 500Ω with a 5µs Load RC Time Constant.
  • Filtered Bus Input Receiver.
  • Ground Fault Tolerant for Bus Isolation.
  • Short Circuit and Over Temperature Protection.
  • Protection for Reverse Battery, Load Dump and Latch-Up.

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Full PDF Text Transcription

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HIP7020 June 1998 J1850 Bus Transceiver For Multiplex Wiring Systems Description The HIP7020 IC is an Integrated I/O Bus Transceiver designed for the SAE Standard J1850 Class B Data Communication Network Interface. The Bus transmits and receives data on a single wire using a 10.4kHz VPWM (Variable Pulse Width Modulated) signal. The HIP7020 serves as an I/O buffer interfacing to 5V CMOS logic. It is designed to operate directly from the 12V battery line of an automobile. The normal Bus voltage swing capability is from 0V to 7.75V at currents greater than 20mA. As shown in the Block Diagram, the Transmitter TX Input and the Receiver RX Output of the Bus Transceiver Circuit interface to the control logic.
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