The SFS6400A-LF from Z-COMM is a Frequency Synthesizer with Frequency 6.4 GHz, Reference Frequency 10 MHz, Output Power 3 to 9 dBm, Spurious -65 dBc, Supply Voltage 3 V. Tags: Surface Mount, PLL Frequency Synthesizer. More details for SFS6400A-LF can be seen below.