DS2109S

DS2109S

Compare
DS2109S
IC TERM SCSI PLUG/PLAY 28-SOIC
Compare

$0.28

Quantity Available: 3500
SZC Quality Assurance
Analog Devices Inc./Maxim Integrated

Analog Devices Inc./Maxim Integrated

Maxim Integrated has amalgamated with Analog Devices, imparting an augmented repertoire of superlative mixed-signal and power governance innovations, fostering clientele triumph across diverse sectors. This amalgamation begets a spectrum of resolutions for surmounting the utmost intricate quandaries, spanning from direct current to the expanse of 100 gigahertz, encompassing miniscule nanowatt realms to robust kilowatt domains, spanning the sensor continuum to the ethereal expanse of cloud. Delve deeper into Analog Devices' enriched assemblage on their product dossier.

View All Product from Analog Devices Inc./Maxim Integrated

DS2109S FEATURES


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

DS2109S DESCRIPTION

The DS2109 is intended for one chip Plug and Play(PnP) SCSI termination. Plug and Play SCSI requiresthe exit–point terminator on computer motherboards orhost bus adapters to automatically switch off if an exter-nal device is connected to the system. The DS2109 sat-isfies this requirement by offering the engineer a choiceof onboard current sensing circuitry or onboard grounddetect circuitry. If an external device is connected, theDS2109 will automatically be isolated from the SCSIbus thereby maintaining proper system termination.The DS2109 integrates a low drop–out regulator, 18precise switched 110 ohm termination resistors, andbus termination sensors into a 28–pin 300 mil SOICpackage. Active termination provides: greater immu-nity to voltage drops on the TERMPWR (TERMinationPoWeR) line, enhanced high–level noise immunity,intrinsic TERMPWR decoupling, and very low quies-cent current consumption. The DS2109 contains anoutput port that can control the power down pin of addi-tional terminators (DS21S07A) for Wide SCSI applica-tions.

DS2109S FUNCTIONAL DESCRIPTION

The DS2109 is designed to be a single chip terminationsubsystem for use in PnP SCSI systems, Figure 1.When embedded on a host bus adapter or mother-board, the DS2109 can automatically sense the ter-mination status of the SCSI bus and attach or isolate itsresistors as needed to maintain proper bus termination.External and internal active termination can be providedby the DS21S07A.DS2109 APPLICATION ENVIRONMENT Figure 1

Product Attributes

TYPE DESCRIPTION Select all
Package Tube
Series -
Supplier Device Package 28-SOIC
Package / Case 28-SOIC (0.337", 8.56mm Width)
Mounting Type Surface Mount
Operating Temperature 0°C ~ 70°C
Voltage - Supply 4V ~ 5.25V
Number of Terminations 18
Type SCSI
Product Status Obsolete

$0.28

Quantity Available: 3500
SZC Quality Assurance
Analog Devices Inc./Maxim Integrated

Analog Devices Inc./Maxim Integrated

Maxim Integrated has amalgamated with Analog Devices, imparting an augmented repertoire of superlative mixed-signal and power governance innovations, fostering clientele triumph across diverse sectors. This amalgamation begets a spectrum of resolutions for surmounting the utmost intricate quandaries, spanning from direct current to the expanse of 100 gigahertz, encompassing miniscule nanowatt realms to robust kilowatt domains, spanning the sensor continuum to the ethereal expanse of cloud. Delve deeper into Analog Devices' enriched assemblage on their product dossier.

View All Product from Analog Devices Inc./Maxim Integrated
45
Serves customers in 45 countries
1000+
Worldwide Manufacturers
$140M
$140M Growth in 5 Years
50.0M+
50M Parts Shipped in 5 Years