What the wide supply range means for your rail
The DSC1121AL5-024.5760T accepts a 2.25V to 3.6V supply, so it runs directly off a 2.5V or 3.3V rail without a dedicated LDO — one less part on the BOM, one less dropout voltage to budget. At 24.576 MHz with CMOS output, the maximum supply current is 22 mA — the oscillator's own draw is small enough that a shared rail with a modest MCU or FPGA bank won't sag below the minimum input voltage.
The MEMS base resonator holds ±10ppm frequency stability across that range — no quartz aging drift to track, which simplifies the clock tree validation for a 10/100 Ethernet PHY or a USB hub.
The 6-SMD, no-lead package measures 7.00 mm x 5.00 mm with a seated height of 0.90 mm — a standard 7x5 footprint that matches many quartz XO footprints, so a board designed for a quartz can often take this MEMS part without a layout change.