Datasheet Summary
.. Freescale Semiconductor
Advance Information
Document Number: MC33990 Rev 3.0, 11/2006
Enhanced Class B Serial Transceiver
The 33990 is a serial transceiver designed to provide bi-directional half-duplex munication meeting the automotive SAE Standard J1850 Class B Data munication 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 33990 operates directly from a vehicle's 12 V battery system and functions in a true logic fashion as an I/O interface between the microcontroller...