ZHCSH72I September 2011 – December 2017 LMK00301
The LMK00301 has separate 3.3 V core (VCC) and 3 independent 3.3 V/2.5 V output power supplies (VCCOA, VCCOB, VCCOC) supplies. Output supply operation at 2.5 V enables lower power consumption and output-level compatibility with 2.5 V receiver devices. The output levels for LVPECL (VOH, VOL) and LVCMOS (VOH) are referenced to its respective Vcco supply, while the output levels for LVDS and HCSL are relatively constant over the specified Vcco range. Refer to Power Supply Recommendations for additional supply related considerations, such as power dissipation, power supply bypassing, and power supply ripple rejection (PSRR).
Care should be taken to ensure the Vcco voltages do not exceed the Vcc voltage to prevent turning-on the internal ESD protection circuitry.