8T49N105A-008KILF

Overview

The 8T49N105A-008KILF is a clock generator from the FemtoClock series by Renesas Electronics. It operates within a temperature range of -40°C to +85°C and utilizes a 40-VFQFN exposed pad package. The device functions as a frequency translator, supporting input frequencies up to 875 MHz and generating output frequencies up to 1 GHz. Key electrical specifications include a maximum jitter of 350 fs and a duty cycle of up to 60%. Power consumption varies between 264 mA and 281 mA during operation.

Feature Summary

• Generates up to four distinct output frequencies from two clock inputs and a crystal input
• Features fractional output dividers for flexible frequency synthesis
• Supports boot configuration from external EEPROM or internal OTP ROM

Applications

• High-speed data communication systems
• Network infrastructure equipment
• Server and storage applications requiring precise timing

Procurement Notes

Verify component authenticity through authorized channels due to discontinuation status. Confirm RoHS compliance details via official documentation. Ensure compatibility with existing board layouts given the specific 40-VFQFN package requirements. Check for any product change notices affecting pinout or electrical characteristics before finalizing procurement plans.

Selection Notes

Select this component when low jitter performance and flexible frequency generation are critical. Consider the operating temperature range and power consumption limits relative to system constraints. Evaluate the need for fractional division capabilities versus integer-only solutions. Ensure the design supports the required I2C interface speeds for configuration management.

Part Context

This part belongs to the IDT8T49N105I series, now under Renesas Electronics following acquisition by SiTime. The FemtoClock brand denotes high-performance timing solutions. The product line focuses on jitter attenuation and frequency translation for demanding digital applications.

Replacement Considerations

SiTime has acquired the timing product portfolio. Consult SiTime.com for equivalent parts or transition support. Verify if direct replacements maintain identical pinouts and electrical specifications.