The Maxim DS2118MB/C02 is a SCSI Termination IC. The DS2118M Ultra3 LVD/SE SCSI terminator is both a low-voltage differential (LVD) and single-ended(SE) terminator. The multimode operation enables the designer to implement LVD in currentproducts while allowing the end-user SE-backward compatibility with legacy devices. If the device is connected in an LVD-only bus, the DS2118M will use LVD termination. If any SE devices are connected to the bus, the DS2118M will use SE termination. This is accomplished automatically inside the part by sensing the voltage on the SCSI bus DIFFSENS line. Three DS2118M terminators are needed for a wide SCSI bus.