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Product InformationFeatures
Description
The UCC5611 provides 18 lines of active termination for a SCSI (Small Computer Systems Interface) parallel bus. The SCSI standard recommends active termination at both ends of the cable segment. The UCC5611 is ideal for high performance 3.3-V SCSI systems. The key features contributing to such low-operating voltage are the 0.1-V drop-out regulator and the 2.75-V reference. During disconnect the supply current is typically only 1 uA, which makes the IC attractive for battery powered systems. The UCC5611 is designed with an ultra-low channel capacitance of 1.8 pF, which eliminates effects on signal integrity from disconnected terminators at interim points on the bus. The UCC5611 can be programmed for either a 110 The power amplifier output stage allows the UCC5611 to source full termination current and sink active negation current when all termination lines are actively negated. The UCC5611 is pin for pin compatible with Texas Instrument’s other 18-line SCSI terminators, except that DISCNCT\ is now active low, allowing lower capacitance and lower voltage upgrades to existing systems. The UCC5611, as with all of Texas Instrument terminators, is completely hot pluggable and appears as high impedance at the terminating channels with VTRMPWR = 0 V or open. Internal circuit trimming is utilized, first to trim the 110 Other features include thermal shutdown and current limit. This device is offered in low thermal resistance versions of the industry standard 28-pin wide body SOIC and 28-pin PLCC. |
| Packaging | CAD Design Tools | Samples | ||||||
| Device | Status | Temp (oC) | Replaced By | Package | Pins | Top Side Marking | Symbols | Footprints | Samples |
| UCC5611DWP | NRND | 0 to 70 | UCC5617DWP | SOIC (DW) | 28 | View | Replaced by UCC5617DWP | ||
| UCC5611DWPG4 | NRND | 0 to 70 | SOIC (DW) | 28 | View | Not Available | |||
| UCC5611DWPTR | NRND | 0 to 70 | UCC5617DWPTR | SOIC (DW) | 28 | View | Replaced by UCC5617DWPTR | ||
| UCC5611DWPTRG4 | NRND | 0 to 70 | SOIC (DW) | 28 | View | Not Available | |||
| TI Inventory Status | Reported Distributor Inventory | |||||
| UCC5611DWP | As of 8:01 AM GMT, 03 Jul 2009 | As of 8:01 AM GMT, 03 Jul 2009 | ||||
| Lead Time | Region | Company | In Stock | Purchase | ||
| Call** | Americas | Rochester Electronics | >1k | |||
** 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.
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/2.5-k Programmable Termination
