MEMS oscillator at 2.048 MHz — standard telecom reference clock
The DSC1033CI1-002.0480T is a 2.048 MHz XO (Standard) oscillator from Microchip's PureSilicon™ MEMS family, outputting CMOS levels from a 3.3 V supply rail. The 2.048 MHz frequency is a common T1/ and synchronous Ethernet reference clock — if your board generates or recovers a 2.048 MHz frame pulse, this oscillator serves that slot directly without a PLL multiplier.
Standby function and low-power disable current
In a battery-powered design that clocks only intermittently — a remote sensor waking to transmit on a 2.048 MHz SPI bus — the standby current is negligible against the battery self-discharge. Active draw is 3 mA typical at 2.048 MHz.
If you are filling a BOM line for a production run, confirm the required quantity before committing to a board spin — a functional replacement will likely require a different order code and possibly a layout change.
Package and footprint — 4-SMD no-lead
The oscillator is supplied in a 4-SMD, No Lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm. No lead frame means the solder joints are under the package; inspect the fillet after reflow to confirm wetting.