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DS21S07AS
DS21S07AE
DESCRIPTION
Fast SCSI and Ultra SCSI require the use of active ter-
minations at both ends of every cable segment in a
SCSI system with single鈥揺nded drivers and receivers.
The DS21S07A SCSI Terminator, which is fully com-
pliant 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, in-
trinsic TERMPWR decoupling, and very low quiescent
current consumption. The DS21S07A integrates a reg-
ulator and nine precise switched 110 ohm termination
resistors into a monolithic IC. The DS21S07A can be
electrically isolated from the SCSI bus without physical
removal from the SCSI device.
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