UC5601DWP

Overview

The UC5601DWP is an active terminator for SCSI and SCSI-2 standards, providing precision resistive pull-up to a 2.9V reference for all 18 lines in a cable. It operates with a Termpwr voltage of 4.0V to 5.25V and signal line voltages from 0V to +3V. The device features a typical termination impedance of 110 Ohms and a regulator output voltage of 2.9V. Supply current ranges from 17mA to 25mA when lines are open, dropping to 100µA–150µA in power-down mode. It includes thermal shutdown protection at 170°C and negative clamping on signal lines.

Feature Summary

• Active termination for 18 SCSI bus lines with logic command disconnect capability
• Trimmed regulator ensuring accurate termination current within ±3% tolerance
• Integrated thermal shutdown and current limit protection mechanisms

Applications

• SCSI-2 standard active termination at cable segment ends
• Supporting hot plugging operations on SCSI buses
• Providing precision resistive pull-up for single-ended drivers and receivers

Procurement Notes

Verify the specific ordering suffix DWP corresponds to the SOIC-28 package configuration. Confirm RoHS compliance status and moisture sensitivity level ratings prior to procurement. Ensure the supplier provides the original Texas Instruments datasheet for final electrical characteristic validation.

Selection Notes

Select this component for designs requiring compliant active termination for 18-line SCSI interfaces. Consider the SOIC-28 package dimensions and thermal resistance characteristics for PCB layout. Evaluate the disconnect input threshold requirements against system logic levels to ensure proper standby power reduction.

Part Context

The UC5601DWP belongs to the UC5601 family of SCSI active terminators manufactured by Texas Instruments. This series is designed to meet SCSI and SCSI-2 standards, offering integrated regulation and protection features. The DWP suffix specifically denotes the industry-standard 28-pin wide body SOIC package variant.

Replacement Considerations

UC5601DWPG4 is a verified lead-free replacement option within the same package type.