Features: • Fully compliant with SCSI1, Fast SCSI and Ultra SCSI• Functionally compatible with DS21S07A• Provides active termination for 18 signal lines• 5% tolerance on termination resistors and voltage regulator• 5% tolerance on termination current• Low power ...
DS2106: Features: • Fully compliant with SCSI1, Fast SCSI and Ultra SCSI• Functionally compatible with DS21S07A• Provides active termination for 18 signal lines• 5% tolerance on term...
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Fast SCSI and Ultra SCSI require the use of active terminations at both ends of every cable segment in a SCSI system with singleended drivers and receivers. Ultra SCSI requires support of active negation and hot plugging. The DS2106 is fully compliant with these standards.
The DS2106 integrates a low dropout regulator and 18 precise switched 110 ohm termination resistors into a 28pin 300 mil SOIC package.
Active termination provides: greater immunity to voltage drops on the TERMPWR (TERMination PoWeR) line, enhanced highlevel noise immunity, intrinsic TERMPWR decoupling, and very low quiescent current consumption. One DS2106 can be used to terminate the Narrow SCSI bus, and a DS21S07A can be used with a DS2106 for termination of a Wide SCSI bus.