UCC5639FQPTR

Overview

The UCC5639FQPTR is a multimode SCSI line terminator manufactured by Texas Instruments, designed for high-speed data transmission environments. It supports SCSI-1, Fast SCSI, and Ultra2 SCSI standards, providing termination for up to 15 differential lines. The device features reverse disconnect capability, allowing the termination resistors to be electrically isolated from the bus when not in use, which prevents signal degradation on inactive segments. This component is housed in a compact package suitable for space-constrained applications requiring reliable SCSI bus management.

Feature Summary

• Supports multiple SCSI speed modes including SCSI-1, Fast, and Ultra2
• Provides termination for up to 15 differential signal lines
• Integrates reverse disconnect functionality to isolate termination resistors

Applications

• SCSI bus termination in server and storage systems
• High-speed peripheral interface circuits
• Data communication equipment requiring multimode SCSI support

Part Context

This component belongs to the UCC563x family of SCSI terminators from Texas Instruments. It is functionally related to parts like the UCC5638 and UCC5631 but distinguishes itself through the inclusion of reverse disconnect logic. The 'FQP' suffix typically indicates a specific package type and temperature rating variant within the TI portfolio.

Replacement Considerations

Direct replacements include the UCC5638FQPTR, though it lacks the reverse disconnect feature. Designers must verify if the application requires active isolation of the termination network. Other family members like the UCC5629 serve different line counts and are not pin-compatible.