MEMS clock at 48.461 MHz — what this oscillator is
The DSC1033BI1-048.4610T is a MEMS-based XO (Standard) from Microchip's PureSilicon™ DSC1033 series, delivering a 48.461 MHz CMOS output from a 3.3V rail. The MEMS resonator replaces a quartz crystal, giving it faster start-up and better shock tolerance than a conventional crystal oscillator — useful in portable or vibration-prone equipment.
Microchip lists the DSC1033BI1-048.4610T as Obsolete. Available now through independent surplus channels; quantities are lot-specific and confirmed at RFQ.
Standby function and power budget
The part includes a Standby (Power Down) function that drops the supply current to 1µA max when disabled — a useful feature for battery-powered designs where the clock is gated during sleep. Active draw is 4mA typical, so the standby savings are meaningful in a low-duty-cycle system.