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DS2109S 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.
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• Fully compliant with SCSI–1, Fast SCSI and Ultra
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.
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
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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 |
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 IntegratedDS21T07 SCSI TERMINATOR
DIFFERENTIAL SCSI TERMINATOR
IC CABLE TERM MP 24-SSOP
IC TERMINATOR SCSI 20-TSSOP
IC TERM SCSI LVD/SE ULT3 28TSSOP
IC TERM SCSI ULTRA3 LVD 36-SSOP
IC TERM SCSI ULTRA3 LVD 36-SSOP
IC TERM SCSI ULTRA3 LVD 28TSSOP
IC TERM SCSI ULT3 LVD/SE 48-LQFP
IC TERMINATOR SCSI 20-TSSOP