The HEM884-L from BOWEI Integrated Circuits is a Voltage Controlled Oscillator with Frequency 270 to 290 MHz, Power 6.31 mW, Tuning Sensitivity 4 to 6 MHz/V, Tuning Voltage 0.5 to 4.5 V, Phase Noise -140 to -118 dBc/Hz. More details for HEM884-L can be seen below.