This part is a kind of semiconductor called 74FCT244ASO.
Function of this product has IDT74FCT244ASO.
Manufacturers : Integrated Device Technology
Image and pinout :

Some of the text within the PDF file :
® FAST CMOS OCTAL BUFFER/LINE DRIVER Integrated Device Technology, Inc. IDT54/74FCT240/A/C IDT54/74FCT241/A/C IDT54/74FCT244/A/C IDT54/74FCT540/A/C IDT54/74FCT541/A/C FEATURES: • IDT54/74FCT240/241/244/540/541 equivalent to FASTTM speed and drive • IDT54/74FCT240A/241A/244A/540A/541A 25% faster than FAST • IDT54/74FCT240C/241C/244C/540C/541C up to 55% faster than FAST • IOL = 64mA (commercial) and 48mA (military) • CMOS power levels (1mW typ. static) • Product available in Radiation Tolerant and Radiation Enhanced versions • Military product compliant to MIL-STD-883, Class B • Meets or exceeds JEDEC Standard 18 specifications DESCRIPTION: The IDT octal buffer/line drivers are built using an advanced dual metal CMOS technology. The IDT54/74FCT240/A/C, IDT54/74FCT241/A/ [ ... ]
74FCT244ASO PDF Datasheet Download
