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. Ultra SCSI requires support of active negation and hot plugging. The DS21T06 is fully compliant with these standards.

The DS21T06 integrates a low dropout regulator and 18 precise switched 110 ohms termination resistors into a 28-pin 300-mil SOIC package.

FEATURES

■ Fully compliant with SCSI-1, Fast SCSI and Ultra SCSI

■ Functional drop in replacement for the DS2106

■ Complimentary part to DS21T07 for wide SCSI

■ Provides active termination for 18 signal lines

■ 5 tolerance on termination resistors and voltage regulator

■ 5 tolerance on termination current

■ Low power down capacitance of 3 pF

■ Onboard thermal shutdown circuitry

■ SCSI bus hot plug compatible

■ Fully supports actively negated SCSI signals