UC560DP

Overview

The UC560DP is an obsolete Texas Instruments active termination power supply designed for SCSI parallel buses. It provides a regulated 2.85-V output with 1.4% tolerance to support up to 27 lines of active termination. The device delivers –750 mA sourcing current and 300 mA sinking current, featuring a 0.9-V dropout voltage at 750 mA. Operating from a 4.0 V to 6.0 V input, it includes thermal shutdown and current limit protection. Packaged in an 8-pin SOIC (DP), it operates within a 0°C to 70°C temperature range.

Feature Summary

• Provides regulated 2.85-V output for up to 27 SCSI bus lines
• Includes thermal shutdown and current limit protection
• Features low-thermal-resistance surface mount packaging

Applications

• SPI-2 and SPI-3 compliant SCSI bus active termination
• Wide SCSI bus configurations requiring up to 27 termination lines

Procurement Notes

Verify the UC560DP status as obsolete on official Texas Instruments channels before design integration. Confirm availability through lifetime-buy programs or authorized distributors if existing inventory is required. Ensure replacement components meet identical electrical specifications and pinout compatibility for legacy system maintenance.

Selection Notes

Select this component only for legacy designs requiring specific 2.85-V regulation for SCSI termination. Evaluate alternative modern regulators if new hardware development is planned due to discontinued production status. Verify that the 8-pin SOIC package fits the target PCB footprint and thermal management requirements.

Part Context

The UC560DP belongs to the UC560 family of SCSI active termination power supplies. It shares internal logic with the UC5603 and UC5613 but lacks integrated termination circuits, offering higher source current drive capability. This variant focuses solely on providing stable power for external termination networks in high-speed parallel interface applications.

Replacement Considerations

UC560DPTR