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.