3.5795 MHz MEMS XO – automotive grade, now obsolete
The DSC6001HI2A-003.5795 is a MEMS-based XO (Standard) from Microchip's DSC60XX series, delivering a 3.5795 MHz CMOS output with ±25 ppm frequency stability across -40°C to +85°C. AEC-Q100 qualified, it was designed for automotive timing applications where a quartz crystal would be too shock-sensitive — the MEMS resonator handles engine-bay vibration and thermal cycling without frequency drift. For existing BOM lines, the available inventory is the last of the run; new designs should evaluate a current DSC60XX variant with the same footprint and supply voltage.
Supply range and enable/disable function
The 1.71V to 3.63V supply range lets the oscillator run from a 1.8V or 3.3V rail without an intermediate LDO — useful in mixed-voltage automotive ECUs where the core and I/O supplies differ.
4-SMD No Lead – board layout fit
The 1.60 mm x 1.20 mm package (0.89 mm seated height) is a standard MEMS oscillator footprint, compatible with many 4-pin XO layouts. Confirm the pad geometry matches the recommended land pattern in the DSC60XX datasheet.
Sourcing an obsolete automotive oscillator
Classed as Obsolete by Microchip, the DSC6001HI2A-003.5795 is no longer in production. No official successor with the exact 3.5795 MHz frequency and AEC-Q100 rating is listed — a board spin or frequency change may be required for new production.