This part is a kind of semiconductor called LVC4245A.
Function of this product has 74LVC4245A / SN74LVC4245A.
Manufacturers : ETC
Image and pinout :

Some of the text within the PDF file :
www.DataSheet.co.kr SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS SCAS375D – MARCH 1994 – REVISED JUNE 1998 D D D D EPIC ™ (Enhanced-Performance Implanted CMOS) Submicron Process 3.3-V to 5-V Bidirectional Level Shifter Latch-Up Performance Exceeds 250 mA Per JESD 17 Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages DB, DW, OR PW PACKAGE (TOP VIEW) description This 8-bit (octal) noninverting bus transceiver contains two separate supply rails; B port has VCCB, which is set at 3.3 V, and A port has VCCA, which is set at 5 V. This allows for translation from a 3.3-V to a 5-V environment, and vice versa. (5 V) VCCA DIR A1 A2 A3 A4 A5 A6 A7 A8 GND GND 1 2 3 4 5 6 7 8 9 10 11 [ ... ]
LVC4245A PDF Datasheet Download
