133.3333 MHz MEMS oscillator — BOM-fit note
The DSC1033AE1-133.3333 is a MEMS-based XO (Standard) from Microchip's PureSilicon™ series, delivering a fixed 133.3333 MHz CMOS output from a 3.3V supply rail. For a 133.3333 MHz clock, ±50 ppm translates to ±6.67 kHz of total frequency error — well within the capture range of most Ethernet PHYs, PCIe reference clocks, and FPGA PLLs that specify ±100 ppm or wider.
Supply rail and output compatibility
Runs from a single 3.3V supply with a maximum current draw of 10 mA during active operation. CMOS output swings rail-to-rail, so it drives standard 3.3V CMOS logic inputs directly. No level translation needed when feeding an FPGA bank, a microcontroller clock input, or a clock buffer that accepts 3.3V CMOS levels.
Housed in a 4-SMD, No Lead Exposed Pad package measuring 7.00 mm × 5.00 mm (0.276" × 0.197") with a seated height of 0.90 mm (0.035"). The 4-pin footprint is common across the DSC1033 family, so a single PCB layout can accommodate multiple frequency variants by populating the correct order code.