8T49N004A-048NLGI8

Overview

The 8T49N004A-048NLGI8 is a programmable clock generator from the FemtoClock NG series by Renesas Electronics. It features one circuit with a maximum frequency of 300MHz and supports differential input/output signaling. The device accepts HCSL, LVDS, or LVPECL inputs and provides four LVPECL outputs in a 1:4 ratio. It operates on a supply voltage of 2.375V to 3.465V within an ambient temperature range of -40°C to 85°C. The component is housed in a 32-VFQFN package with an exposed pad.

Feature Summary

• Supports differential input formats including HCSL, LVDS, and LVPECL
• Generates four LVPECL output channels with a 1:4 input-to-output ratio
• Maximum operating frequency of 300MHz
• Integrated PLL with bypass capability

Applications

• High-speed digital system clock distribution
• Data communication equipment timing
• Industrial control systems requiring low jitter clocks

Procurement Notes

This product is listed as obsolete with an end-of-life notification dated July 18, 2025. Verification of current availability requires checking distributor status for remaining stock or alternative sourcing strategies due to the discontinued manufacturing status.

Selection Notes

Select this component when a single reference clock needs to be distributed to four LVPECL loads at frequencies up to 300MHz. Ensure the design accommodates the 32-VFQFN package thermal requirements and the specific 2.375V to 3.465V power supply constraints.

Part Context

The 8T49N004A belongs to the FemtoClock NG family, which utilizes fourth-generation PLL technology for low phase jitter performance. This specific model variant focuses on LVPECL output generation from various differential input sources.

Replacement Considerations

Due to the obsolete status, direct substitutes should be sought among active FemtoClock NG models or compatible Renesas clock generators that support LVPECL outputs and similar pin configurations.