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Class B Serial Transceiver

The 33390 is a serial transceiver designed to provide bi-directional half-duplex communication meeting the automotive SAE Standard J- 1850 Class B Data Communication Network Interface specification. It is designed to interface directly to on-board vehicle microcontrollers and serves to transmit and receive data on a single-wire bus at data rates of 10.4 kbps using Variable Pulse Width Modulation (VPWM). The 33390 operates directly from a vehicles 12 V battery system and functions in a logic fashion as an I/O interface between the microcontrollers 5.0 V CMOS logic level swings and the required 0 V to 7.0 V waveshaped signal swings of the bus. The bus output driver is short circuit current limited.

Features

? Designed for SAE J-1850 Class B Data Rates

? Full Operational Bus Dynamics Over a Supply Voltage of 9.0 to 16 V

? Ambient Operating Temperature of -40¡ãC to 125¡ãC

? Interfaces Directly to Standard 5.0 V CMOS Microcontroller

? BUS Pin Protected Against Shorts to Battery and Ground

? Thermal Shutdown with Hysteresis

? Voltage Waveshaping of Bus Output Driver

? 40 V Max VBAT Capability

? Pb-Free Packaging Designated by Suffix Code EF