The DSC1101AE3-098.3040 is a MEMS-based XO (Standard) oscillator from Microchip's DSC1101 series, delivering a 98.304 MHz CMOS output with ±20 ppm absolute pull range. That frequency lands it squarely in high-speed serial applications — think 100BASE-TX Ethernet, PCIe reference clocks, or FPGA transceiver bitstreams where a quartz oscillator's shock sensitivity or startup time becomes a liability. Supply voltage spans 2.25V to 3.6V, so it runs off a 2.5V or 3.3V rail without an extra LDO. The 6-VDFN exposed pad package (7.00mm x 5.00mm) is a standard oscillator footprint — the pad under the package pulls heat into the board plane, which matters if the ambient hits the upper end of the -20°C to 70°C range.
Standby power-down saves 35 mA when the clock stops
For a battery-powered sensor gateway that only needs the 98.304 MHz clock during active transmit windows, that standby current is low enough to leave the oscillator powered between bursts rather than cycling the supply rail.
Microchip lists the DSC1101AE3-098.3040 as Active. No NRND flag, no last-time-buy clock ticking. The base product number DSC1101 covers a family of frequencies and stability grades, so if a future BOM revision needs a different pull range or output format, the footprint stays the same.