8T49N283C-998NLGI#

Overview

The 8T49N283C-998NLGI is a FemtoClock NG Ultra-Flex Timing (UFT) clock synthesizer manufactured by Renesas Electronics. It operates within a supply voltage range of 2.375V to 3.465V and supports a maximum output frequency of 1GHz. The device features one circuit with an input-to-output ratio of 1:8, providing differential outputs in LVPECL format. It utilizes crystal inputs and includes bypass capabilities for the PLL. The component is housed in a 56-VFQFN package with an exposed pad, suitable for surface mount installation across an operating temperature range of -40°C to +85°C.

Feature Summary

• Ultra-Flex Timing architecture supporting integer and fractional-N synthesis
• Maximum output frequency of 1GHz with 1:8 input-to-output ratio
• Differential LVPECL outputs with crystal input support
• Integrated EEPROM for configuration storage

Applications

• Telecommunications infrastructure requiring GR.1244 compliance
• High-speed data communication systems
• Network synchronization equipment

Procurement Notes

Verify the specific suffix '998' against official Renesas documentation to confirm exact factory configuration and revision level. Ensure compatibility with the 56-VFQFN thermal requirements during integration. Confirm RoHS3 compliance status through current datasheets before procurement.

Selection Notes

Select this model when a single-input, eight-output differential clock distribution solution is required. The 1GHz maximum frequency and FemtoClock NG technology make it suitable for jitter-critical applications. Compare pinout and electrical specifications with existing designs to ensure direct replacement feasibility without schematic modifications.

Part Context

This component belongs to the 8T49N283C series within the FemtoClock NG family. It is designed as a high-performance clock synthesizer for demanding timing applications. The part number indicates specific packaging and configuration options distinct from other variants in the same series.

Replacement Considerations

Direct substitutes include other FemtoClock NG UFT devices such as the 8T49N285A or 8T49N286A series, provided pinouts and electrical parameters match. Verify that alternative parts support the required 1:8 ratio and LVPECL output types.