THE AUCTION IS FOR A LOT OF ( 9 ) VINTAGE NEW DALLAS / MAXIM SEMICONDUCTOR DS2143.  THE PRODUCT IS NEW OLDER  EXCESS MANUFACTURED IN 1999. THIS IS A software-driven E1 framer 40 PIN CHIP.  BUYER IS RESPONSIBLE FOR RESEARCHING ALL SPECIFICATIONS AND COMPATIBILITY.  THE PRODUCT IS OLDER INVENTORY AND WOULD NOT BE ROHS COMPLIANT.  BUYER WILL RECEIVE ONE FACTORY TUBE OF 9.