8T49N281C-999NLGI8

Overview

The 8T49N281C-999NLGI8 is a FemtoClock NG clock generator manufactured by Renesas Electronics. It operates within a supply voltage range of 2.375V to 3.465V and supports an operating temperature from -40°C to +85°C. The device features one PLL circuit with a maximum output frequency of 1GHz. It accepts crystal inputs and provides LVCMOS and LVPECL outputs in a 56-VFQFN exposed pad package (8x8mm). The component is RoHS3 compliant and classified under Clock Generators.

Feature Summary

• Integrates FemtoClock NG PLL technology for low phase jitter performance
• Supports up to 8 differential or single-ended outputs via bank selection
• Accepts crystal input references with internal oscillator options
• Programmable via I²C interface for flexible configuration

Applications

• High-speed data communication equipment
• Network synchronization systems
• Test and measurement instrumentation

Procurement Notes

Verify the specific order code suffix against the official datasheet to confirm factory pre-programmed settings. Confirm package availability as manufacturing status may vary. Ensure compatibility with required output voltage levels (2.5V or 3.3V) during design integration.

Selection Notes

Select this model when a single PLL clock generator with up to 1GHz output frequency is required. Verify that the 56-VFQFN package fits the PCB layout constraints. Check if the supported output types (LVCMOS, LVPECL) meet the system interface requirements.

Part Context

This part belongs to the 8T49N281C series within the FemtoClock NG family. It is designed for applications requiring precise clock synthesis and translation from crystal references to high-frequency digital signals.

Replacement Considerations

Consult the manufacturer's documentation for direct pin-to-pin replacements. Cross-reference with other 8T49N281C variants or similar FemtoClock devices for functional equivalence.