27 MHz HCSL clock — what it drives
The DSC1104DL1-027.0000T: A 27 MHz XO with HCSL output — that's the signalling standard for PCIe reference clocks and other high-speed differential busses.
Industrial temperature reach and supply flexibility
The 2.25V–3.6V supply range covers 2.5V and 3.3V rails without an extra regulator. At 42 mA max supply current the thermal budget inside a 6-SMD package is manageable even at 105°C ambient.
Microchip lists this part as Active. No NRND flag, no last-time-buy deadline. The 6-SMD no-lead package is a standard 2.5 mm × 2.0 mm footprint — no weird pad geometry.