53.125 MHz MEMS clock — field-fit note
The DSC1121AI2-053.1250T: This is a 53.125 MHz MEMS-based XO with CMOS output — a direct drop-in for any digital logic or FPGA clock input that expects a standard 3.3V or 2.5V CMOS-level square wave. The MEMS resonator means no quartz crystal to age or shock-misalign; it is a sealed silicon die inside the 6-VDFN package. Runs off a 2.25V to 3.6V supply, so it works on a 2.5V or 3.3V rail without a separate regulator. If your system sees under-hood heat or a cold start, this grade has margin.
Sourcing and lifecycle — active, quoted to order
Package and board-fit — 6-VDFN with exposed pad
6-VDFN package, 7.00 mm x 5.00 mm body, 0.90 mm seated height. Surface-mount only — no socket option. The 0.90 mm height is low enough for 1U rack-mount card spacing.