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UCC5617 Status: ACTIVE

Lowest Capacitance 18-Line 5V SE Terminator for SCSI Through Ultra SCSI with Inverted Sensing


      
         
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 UCC5617
Number of Lines18  
Driver Types SupportedSE  
TERMPWR Voltage(Min)(V)4  
TERMPWR Voltage(Max)(V)5.25  
Disconnect Active StateLow  
ProcessBi-CMOS  
Channel Capacitance(pF)2.5  
Resistor Tolerance(ppm)500  
Typical Sink Current(mA)200  
Current Tolerance(%)3  
Single-Ended Termination Impedance(ohms)110  
Single-Ended Tolerance(%)5  
Operating Temp Range(Celsius)0 to 70  
Pin/Package28SOIC  
 Samples
 Inventory

Product Information

Features

  • Complies with SCSI, SCSI-2, SCSI-3, SPI and FAST-20 Standards
  • 2pF Channel Capacitance During Disconnect
  • 50mA Supply Current in Disconnect Mode
  • 110 Termination
  • SCSI Hot Plugging Compliant, 10nA Typical
  • +400mA Sinking Current for Active Negation
  • –650mA Sourcing Current for Termination
  • Trimmed Impedance to 5%
  • Thermal Shutdown
  • Current Limit

Description

The UCC5617 provides 18 lines of active termination for a SCSI (Small Computers Systems Interface) parallel bus. The SCSI standard recommends and Fast-20 (Ultra) requires active termination at both ends of the cable.

Pin for pin compatible with the UC5609, the UCC5617 is ideal for high performance 5V SCSI systems, Termpwr 4.0-5.25V. During disconnect the supply current is only 50uA typical, which makes the IC attractive for lower powered systems.

The UCC5617 is designed with a low channel capacitance of 2pF, which eliminates effects on signal integrity from disconnected terminators at interim points on the bus.

The power amplifier output stage allows the UCC5617 to source full termination current and sink active negation current when all termination lines are actively negated.

The UCC5617, as with all Unitrode terminators, is completely hot pluggable and appears as high impedance at the terminating channels with TRMPWR = 0V or open.

Internal circuit trimming is utilized, first to trim the 110 impedance, and then most importantly, to trim the output current as close to the maximum SCSI-3 specification as possible, which maximizes noise margin in fast SCSI operation.

This device is offered in low thermal resistance versions of the industry standard 28 pin wide body SOIC.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC5617DWPACTIVE0 to 702.45 | 1kuSOIC (DW) | 28 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC5617DWPG4ACTIVE0 to 702.45 | 1kuSOIC (DW) | 28 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC5617DWPTRACTIVE0 to 702.30 | 1kuSOIC (DW) | 28 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC5617DWPTRG4ACTIVE0 to 702.30 | 1kuSOIC (DW) | 28 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 9:44 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 1 WeekUCC5617DWP
AmericasRochester Electronics >1k
EuropeAvnet-SILICA 80
EBV Elektronik 20
WorldwideDigiKey 104
TI Lead Time*: 1 WeekUCC5617DWPG4
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksUCC5617DWPTR
AmericasRochester Electronics >1k
EuropeEBV Elektronik 500
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksUCC5617DWPTRG4
WorldwideDigiKey  Available
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
UCC5617DWP RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC5617DWPG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC5617DWPTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC5617DWPTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

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