The DSC1001DC5-045.1584T is a 45.1584 MHz XO (Standard) from Microchip's DSC1001 series, built on a MEMS resonator rather than a quartz crystal. The supply voltage spans 1.8V to 3.3V, letting it sit on a 1.8V core rail or a 3.3V I/O rail without a level translator.
AEC-Q100 qualification and automotive fit
Listed as Active by Microchip, the DSC1001DC5-045.1584T has no announced end-of-life.
Housed in a no-lead package measuring 2.50 mm × 2.00 mm with a seated height of 0.90 mm. The small footprint suits space-constrained PCBs.
