This part is a kind of semiconductor called A82C251.

Function of this product has PCA82C251.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

PCA82C251 CAN transceiver for 24 V systems Rev. 04 25 August 2011 Product data sheet 1. General description The PCA82C251 is the interface between a CAN protocol controller and the physical bus. The device provides differential transmit capability to the bus and differential receive capability to the CAN controller. 2. Features and benefits          Fully compatible with the “ISO 11898-24 V” standard Slope control to reduce Radio Frequency Interference (RFI) Thermally protected Short-circuit proof to battery and ground in 24 V powered systems Low-current Standby mode An unpowered node does not disturb the bus lines At least 110 nodes can be connected High speed (up to 1 MBd) High immunity against electromagnetic interference. 3. Applications  High-s [ ... ]

A82C251 PDF Datasheet Download