This part is a kind of semiconductor called ATA6624.

Function of this product has (ATA6622 - ATA6626) LIN Bus Transceiver.

Manufacturers : ATMEL Corporation

Image and pinout :

Some of the text within the PDF file :

Features • • • • • • Master and Slave Operation Possible Supply Voltage up to 40V Operating voltage VS = 5V to 27V Typically 10 µA Supply Current During Sleep Mode Typically 57 µA Supply Current in Silent Mode Linear Low-drop Voltage Regulator: – Normal, Fail-safe, and Silent Mode – ATA6622 VCC = 3.3V ±2% – ATA6624 VCC = 5.0V ±2% – ATA6626 VCC = 5.0V ±2%, TXD Time-out Timer Disabled – In Sleep Mode VCC is Switched Off VCC- Undervoltage Detection (4 ms Reset Time) and Watchdog Reset Logical Combined at Open Drain Output NRES Negative Trigger Input for Watchdog Boosting the Voltage Regulator Possible with an External NPN Transistor LIN Physical Layer According to LIN 2.0 Specification and SAEJ2602-2 Wake-up Capability via LIN-bus, Wake Pin, or K [ ... ]

ATA6624 PDF Datasheet Download