UCC5630AFQPTR

Overview

The UCC5630AFQPTR is a multimode SCSI terminator manufactured by Texas Instruments, designed for LQFP-48 packages. It supports SPI-2, SPI-3, and SPI-4 standards with automatic detection of Single Ended (SE) or Low Voltage Differential (LVD) modes via the DIFFB pin. Operating voltage ranges from 2.7V to 5.25V. The device provides differential termination impedance of 105 Ohms typical and single-ended impedance of 110 Ohms typical. Supply current is 20mA in LVD mode and 10mA in SE mode at no load. Output capacitance is 3pF per line. It operates within a temperature range of 0°C to 70°C.

Feature Summary

• Automatically detects and switches between Single Ended and Low Voltage Differential SCSI bus modes
• Integrated differential failsafe biasing to ensure signal integrity
• Supports active negation and includes master/slave input control
• Thermal packaging design for improved junction temperature management

Applications

• SPI-2 (Ultra2 LVD) SCSI bus termination
• SPI-3 (Ultra3/Ultra160) SCSI bus termination
• SPI-4 (Ultra320) SCSI bus termination

Procurement Notes

Verify the package type matches the required footprint, as the UCC5630A family includes both SSOP and LQFP variants. Confirm the suffix indicates the tape and reel quantity if specific handling is needed. Check the latest datasheet for moisture sensitivity level and reflow soldering profiles to ensure compatibility with assembly processes.

Selection Notes

Select this component when designing systems requiring support for mixed SE and LVD SCSI devices on the same bus. Ensure the application environment stays within the 0°C to 70°C operating temperature range. Verify that the power supply voltage remains between 2.7V and 5.25V to maintain proper regulator function and termination accuracy.

Part Context

This part belongs to the UCC5630A series of multimode SCSI terminators. It is specifically the LQFP-48 variant packaged in a tape and reel format. The series also includes an SSOP-36 version for different board space requirements. All variants share the same core functionality for auto-detecting SCSI bus types.

Replacement Considerations

UCC5630AFQP is the identical functional component but supplied in a tube instead of a tape and reel. UCC5630AMWPTR is the SSOP-36 equivalent in tape and reel packaging. Verify pinout compatibility before substitution.