8T49N1012-001NLGI8

Overview

The 8T49N1012-001NLGI8 is a clock generator and support product manufactured by Renesas Electronics. It belongs to the FemtoClock series of clock and timer ICs. The device functions as a programmable clock synthesizer designed for high-performance timing applications. It utilizes advanced PLL technology to generate precise clock signals from reference inputs. The component is packaged in a VFQFN format suitable for surface mount assembly. It operates within standard industrial temperature ranges and supports multiple output configurations to meet diverse system requirements.

Feature Summary

• Integrates fourth-generation FemtoClock NG PLL technology for low phase jitter performance
• Supports selectable LVPECL or LVDS output banks with configurable channel assignments
• Accepts differential input levels including LVPECL, LVDS, and HCSL via CLK and nCLK pairs
• Features an I2C programming interface allowing register settings to overwrite factory pre-programming

Applications

• PCI Express Gen2 (5Gb/s) compliant systems
• PCI Express Gen3 (8Gb/s) compliant systems
• High-speed data communication interfaces requiring jitter attenuation
• Servers and storage systems utilizing multiple frequency clock generation

Procurement Notes

Verify the specific order code suffix against official Renesas documentation to ensure correct factory pre-programmed frequency configurations. Confirm package type and pinout compatibility during integration. Check current production status as clock generator availability may vary. Ensure supply chain sources provide authentic components with valid traceability records.

Selection Notes

Select this component when designing systems requiring precise clock synthesis with low RMS phase jitter. Consider the internal crystal oscillator options and external reference clock flexibility. Evaluate the available output divider configurations for generating multiple frequencies from a single input. Verify that the supported input voltage ranges align with the target system power rails.

Part Context

This part is part of the broader 8T49N family of clock generators developed by Renesas Electronics. It shares architectural similarities with other FemtoClock NG devices like the 8T49N028, focusing on low jitter performance and flexible output configurations. The series is widely used in high-speed digital electronics where signal integrity is critical.

Replacement Considerations

Consult official Renesas substitution guides for compatible alternatives. Cross-reference pinouts and electrical specifications before replacing. Verify that any substitute maintains compliance with required PCIe standards and jitter budgets.