DESCRIPTION

· The DS21T05 is a SCSI terminator fully compliant with SCSI-1, Fast SCSI, and Ultra SCSI standards.
· It integrates a regulator and nine precise-switched 110-ohm termination resistors into a monolithic IC.
· Designed for high volume applications, it offers active termination with relaxed output current and termination tolerances.
· It supports actively negated SCSI signals and includes onboard thermal shutdown circuitry.
· The device is functionally compatible with the DS21T07 but targets applications not requiring its high performance.

FEATURES

· Fully compliant with SCSI-1, Fast SCSI, and Ultra SCSI standards.
· Provides active termination for nine signal lines with laser-trimmed 110-ohm resistors (5% tolerance).
· Features low dropout voltage and a power-down mode that isolates termination resistors from the bus.
· SCSI bus hot-plug compatible and supports actively negated SCSI signals.
· Includes onboard thermal shutdown circuitry for enhanced safety.

APPLICATIONS

· High volume SCSI systems requiring active termination.
· Applications where enhanced high-level noise immunity and low quiescent current consumption are critical.
· Systems that benefit from intrinsic TERMPWR decoupling and greater immunity to voltage drops on the TERMPWR line.