DS2118MB – DALLAS

Overview

The Analog Devices Inc./Maxim Integrated DS2118MB is a high-performance SCSI, LVD/SE terminator designed to provide robust signal integrity in demanding data communication systems. Its primary function is to absorb signal reflections at bus endpoints, ensuring reliable data transfer by maintaining impedance matching. A critical design consideration for such terminators is the trade-off between termination resistance accuracy and power consumption; while tighter tolerance improves signal quality, it can increase quiescent current, a factor often scrutinized in battery-powered or power-sensitive applications. This component offers nine termination channels within a compact 36-SSOP package, making it suitable for space-constrained designs.

Key Features

• SCSI, LVD/SE Interface Type
• 9 Independent Termination Channels
• 4V to 5.5V Supply Voltage Range
• 0°C to 70°C Operating Temperature
• Surface Mountable 36-SSOP Package (36-BSOP, 7.50mm Width)
• Low Quiescent Current (typical specification not provided, but a key design consideration)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• High-speed SCSI bus termination for servers and workstations
• Ensuring signal integrity in legacy storage area networks (SANs)
• Critical endpoint termination in point-to-point data links
• Reducing inter-symbol interference in high-bandwidth peripheral interfaces