DESCRIPTION

Fast SCSI and Ultra SCSI require the use of active terminations at both ends of every cable segment in a SCSI system with single–ended drivers and receivers. The DS2105 SCSI Terminator, which is fully compliant with these standards, enables the designer to gain the benefits of active termination: greater immunity to voltage drops on the TERMPWR (TERMination PoWeR) line, enhanced high–level noise immunity, intrinsic TERMPWR decoupling, and very low quiescent current consumption.

FEATURES

• Fully compliant with SCSI–1, Fast SCSI and Ultra SCSI

• Functionally compatible to the DS21S07A, targeted for high volume applications

• Provides active termination for nine signal lines

• Laser–trimmed 110 ohm termination resistors have 5 tolerance

• Low dropout voltage

• Power–down mode isolates termination resistors from the bus

• Fully supports actively negated SCSI signals

• Onboard thermal shutdown circuitry

• 16–pin plastic SOIC (DS2105)