26 MHz MEMS oscillator with HCSL output and standby
The DSC1104DL2-026.0000T is a 26 MHz XO (Standard) built around a MEMS resonator, not a quartz crystal — no external load capacitors needed, and the frequency is set at the factory. The HCSL output (High-Speed Current Steering Logic) is the same signalling used on PCIe reference clocks, so this oscillator can feed a PCIe clock buffer or a SerDes PLL directly without a level translator. Supply voltage spans 2.25V to 3.6V, covering 2.5V and 3.3V rails without a separate regulator.
The 6-VDFN package (2.50mm × 2.00mm, 0.90mm seated height) is a compact land-grid array — the exposed pad on the bottom side should be soldered to a PCB thermal land for best heat transfer and mechanical stability. For a 26 MHz clock, ±25 ppm is ±650 Hz — tight enough for most Ethernet and USB controllers that specify ±50 ppm or looser.