Four HCSL outputs from a single MEMS resonator
This DSC400-4444Q0059KI2T delivers four independent HCSL clock outputs, each at 100MHz or 125MHz, from a single MEMS resonator — eliminating the need for multiple oscillators on a PCIe or Ethernet reference clock tree. Supply voltage spans 2.25V to 3.6V, letting the oscillator run from a common 2.5V or 3.3V rail without an extra LDO.
The MEMS base resonator gives this oscillator a reliability advantage over quartz in high-vibration or rapid thermal cycling environments, with no wear-out mechanism from a crystal blank.
Enable/Disable and package layout
Housed in a 20-VFQFN with exposed pad (5.00mm x 3.20mm, 0.90mm height), the thermal pad must be soldered to a ground plane for heat sinking and to keep the MEMS die at a stable temperature for frequency accuracy.