This part is a kind of semiconductor called 33389.

Function of this product has System Basis Chip.

Manufacturers : Freescale Semiconductor

Image and pinout :

Some of the text within the PDF file :

Freescale Semiconductor Advance Information Document Number: MC33389 Rev. 5.0, 3/2007 System Basis Chip with Low Speed Fault Tolerant CAN The 33389 is a monolithic integrated circuit combining many functions frequently used by automotive Engine Control Units (ECUs). It incorporates a low speed fault tolerant CAN transceiver. Features • Dual Low Drop Voltage Regulators, with Respectively 100 mA and 200 mA Current Capabilities, Current Limitation, and Over Temperature Detection with Pre-warning • 5.0 V Output Voltage for V1 Regulator • Three Operational Modes (Normal, Stand-by, and Sleep Modes) Separated from the CAN Interface Operating Modes • Low Speed 125 kBaud Fault Tolerant CAN Interface, Compatible with 33388 Stand Alone Physical Interface • V1 Regulato [ ... ]

33389 PDF Datasheet Download