9DML2855NDGI

Overview

The 9DML2855NDGI is a 2-input, 8-output clock multiplexer manufactured by Renesas Electronics Corporation. It supports PCIe Gen1–5 and legacy DB2000Q applications, accommodating complex architectures such as Common Clocked (CC), Separate Reference Independent Spread (SRIS), and Separate Reference no Spread (SRNS). The device operates with an input frequency range of 1 MHz to 400 MHz and delivers LP-HCSL differential outputs. Key electrical parameters include a typical additive phase jitter of 100 fs RMS and a power consumption of 178 mW at a 3.3 V supply voltage. It is housed in a 6mm × 6mm 48-VFQFPN package.

Feature Summary

• Supports PCIe Gen1–5 compliance and legacy DB2000Q applications
• Flexible Power Sequencing (FPS) ensures defined behavior during power-up
• Power Down Tolerant (PDT) ESD protection on all input pins
• Individual OE# pin for each output supporting PCIe CLKREQ# functionality

Applications

• PCIe Gen1–5 Clock Multiplexing
• Legacy DB2000Q Applications
• Complex Clock Architectures (CC, SRIS, SRNS)

Procurement Notes

Verify the specific suffix 'NDGI' against official Renesas documentation to confirm exact temperature grade and packaging configuration. Ensure compatibility with the 48-VFQFPN footprint and 3.3V core voltage requirements during sourcing.

Selection Notes

Select this component for designs requiring low additive jitter (100 fs typ) and support for spread-spectrum inputs. The PDT feature allows input driving prior to VDD application, simplifying power sequencing in systems with strict startup timing constraints.

Part Context

The 9DML2855 belongs to Renesas' family of clock multiplexers designed for high-speed serial interface standards. It addresses the need for flexible clock distribution in server and storage environments where multiple clock sources must be managed efficiently.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Verify functional equivalence with other Renesas PCIe clock muxes if cross-referencing is required.