PACUSB-U3R

Overview

The PACUSB-U3R is a USB upstream port terminator manufactured by onsemi. It is designed to terminate unused USB data lines, preventing floating signals that can cause system instability or excessive power consumption. The component integrates filtering capabilities for signal integrity enhancement. It operates at a voltage of 3.3V and supports one channel of termination. The device is housed in a compact SC-70-6 package, which corresponds to the 6-TSSOP, SC-88, or SOT-363 form factors, suitable for space-constrained portable electronics.

Feature Summary

• Provides dedicated termination for unused upstream USB ports to eliminate floating line issues
• Integrates data line filtering to maintain signal integrity within the circuit
• Designed for low-voltage operation compatible with standard 3.3V logic levels

Applications

• Portable consumer electronics requiring USB connectivity
• Smart home and office devices with multiple interface options
• Industrial and commercial camera systems
• Machine vision equipment
• Video conferencing hardware

Procurement Notes

Verify the obsolete status of this part number before procurement planning. Check current distributor availability as supply may be limited. Confirm package compatibility with existing PCB footprints. Ensure design reviews account for end-of-life implications if long-term production support is required. Consult official documentation for any alternative recommendations from the manufacturer.

Selection Notes

Select this component when terminating unused USB upstream ports in 3.3V systems. Consider the SC-70-6 package size for tight layout constraints. Evaluate the need for integrated filtering alongside termination functions. Verify application requirements against the single-channel capability. Assess lifecycle status due to the obsolete designation when planning future iterations.

Part Context

This component belongs to the PACUSB family of signal terminators from onsemi. It serves as a specialized interface solution for managing unused USB connections in modern electronic designs. The family focuses on providing reliable termination and filtering in small form factors. This specific model represents a legacy option within the broader portfolio of USB interface protection and management devices.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The PACUSB-D1Y5R is listed as a related variant within the same product family but requires verification of functional equivalence. Due to the obsolete status, direct replacement strategies should involve consulting manufacturer engineering support for current alternatives.