8V49NS0412NLGI

8V49NS0412NLGI FemtoClock NG series clock generator IC 212.5MHz

The 8V49NS0412NLGI is a high-performance FemtoClock NG series clock generator from Renesas, packaged in a 64-VFQFPN 9x9mm lead-free RoHS 6 compliant housing, operating from a single 3.3V supply across the full industrial temperature range of -40°C to 85°C for reliable deployment in harsh telecom and datacom environments. This timing IC supports crystal or differential clock inputs, works in full differential LVDS/LVPECL or single-ended LVCMOS mode, and integrates a 2.4–2.5GHz PLL that fully meets frequency plans for Ethernet, SONET and CPRI applications.

It features four integer output dividers and one fractional divider to generate arbitrary target frequencies, delivers outstanding phase noise performance of -143dBc/Hz at 100kHz offset for 156.25MHz output, with maximum RMS phase jitter of only 110fs across the 12kHz to 20MHz integration range. It offers 11 programmable-swing differential LVPECL/LVDS outputs plus one LVCMOS reference bypass output, supports output power-down for power saving, allows partial configuration via control pins without serial access, and uses an LVCMOS-compatible I2C interface for advanced setup through external processors or EEPROM, making it ideal for 10GE, 40GE, 100G and 400G high-speed communication systems.

Alternative clock generator models

● Si5341, a Skyworks ultra-low-jitter any-frequency clock generator with 12 differential outputs, optimized for 100G/400G SERDES timing in high-density network switches.

● 8V49NS0312, a Renesas FemtoClock NG series clock IC with four dividers, delivering 80fs typical phase jitter for cost-sensitive low-latency telecom infrastructure designs.

● CDCE62005, a TI high-performance jitter cleaner and clock generator with integrated PLL, supporting multi-format differential outputs for industrial and automotive high-speed data acquisition systems.