20 PIECES
CY7C168-15PC
CYPRESS
20 PIN DIP
4Kx4 CMOS SRAM
NOS 1 TUBE
https://www.datasheetarchive.com/pdf/download.php?id=f80aa4ec714e8f21f4a717ad348695d5bb0538&type=O&term=CY7C168-15PC