DS125BR800SQ/NOPB

Overview

The DS125BR800SQ/NOPB is an eight-channel PCI Express redriver manufactured by Texas Instruments. It supports data rates of 2.5, 5.0, and 8.0 Gbps for PCIe Gen1, Gen2, and Gen3 applications. The device operates with supply voltages of 2.5 V and 3.3 V and functions within a temperature range of -40°C to +85°C. It utilizes a WQFN-54 package. Key electrical characteristics include a maximum operating current of 192 mA. The component integrates input equalization and output de-emphasis capabilities to maintain signal integrity across high-speed serial links.

Feature Summary

• Eight-channel architecture designed for high-density signal regeneration in PCIe systems
• Integrated adaptive equalization and de-emphasis to compensate for channel loss
• Dual voltage operation supporting both 2.5 V and 3.3 V power domains
• Supports multiple PCIe generation speeds including Gen1, Gen2, and Gen3

Applications

• PCI Express Gen1, Gen2, and Gen3 backplane interconnects
• Peripheral I/O signal conditioning
• Front panel connector signal extension

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the WQFN-54 package dimensions match the target PCB footprint requirements. Check for RoHS compliance status and moisture sensitivity level ratings prior to assembly planning. Ensure the selected variant matches the required data rate support for the intended interface standard.

Selection Notes

Select this component when eight independent channels are required for simultaneous signal regeneration. Compare against single or dual-channel alternatives if pin count or board space is constrained. Verify that the 192 mA current consumption aligns with the system power budget. Ensure compatibility with the host controller's signaling standards and voltage levels before finalizing the design.

Part Context

This device belongs to the DS125BR series of high-speed serial link repeaters. It complements other Texas Instruments interface solutions such as the DS80PCI800 equalizer and the DS125BR401 four-channel redriver. The series addresses signal integrity challenges in modern high-speed digital interfaces requiring robust link maintenance over printed circuit board traces.

Replacement Considerations

The DS125BR800SQE/NOPB is a documented alternative variant within the same family. Verify functional equivalence and package compatibility before substitution. No other cross-manufacturer replacements are confirmed in the provided source material.