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Microchip Technology DSC400-1133Q0079KE2T — Crystals & Oscillators

DSC400-1133Q0079KE2T MEMS Oscillator – Quad Output, ±25 ppm

MPNDSC400-1133Q0079KE2T
Active

Microchip DSC400 series, XO (Standard) MEMS oscillator, quad output 100 MHz, 100 MHz, 66.666 MHz, 25 MHz, LVCMOS/LVDS, ±25 ppm stability, 2.25–3.6 V supply, 20-VFQFN exposed-pad package

Microchip Technology DSC400-1133Q0079KE2T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC400-1133Q0079KE2T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC400
Voltage2.25V ~ 3.6V
Frequency stability±25ppm
Frequency - output 1100MHz
Frequency - output 2100MHz
Frequency - output 366.666MHz
Frequency - output 425MHz
Operating temperature-20°C~70°C
Height0.035\" (0.90mm)
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
OutputLVCMOS, LVDS
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case20-VFQFN Exposed Pad

Product details

Active quad-output MEMS oscillator – 100/100/66.666/25 MHz

The DSC400-1133Q0079KE2T is an active-production XO (Standard) MEMS oscillator from Microchip delivering four independent clock outputs: two at 100 MHz, one at 66.666 MHz, and one at 25 MHz. Outputs are configurable as LVCMOS or LVDS, covering the common logic levels for FPGA reference clocks, Ethernet PHYs, and SoC core clocks from a single device.

Supply range and enable/disable function

Runs from 2.25 V to 3.6 V — covers 2.5 V and 3.3 V rails without a separate regulator; the Enable/Disable pin lets a system controller gate the outputs for power sequencing or test modes.

20-VFQFN package – 5.0×3.2 mm footprint

Housed in a 20-VFQFN with an exposed pad, the package measures 5.00 mm × 3.20 mm and stands 0.90 mm tall — a compact footprint that frees board space on dense multi-layer designs.

Active lifecycle – no EOL watch needed

Frequently asked questions

Is DSC400-1133Q0079KE2T pin-compatible with other DSC400 oscillators (e.g., DSC400-1133Q0078KE2T)?

All DSC400 devices share the same 20-VFQFN package and pinout — the suffix difference (KE2T vs KE2T) reflects the programmed output frequencies, not a hardware change. A DSC400-1133Q0078KE2T is a direct drop-in replacement if its frequency plan matches your BOM.

What is the difference between DSC400 and DSC2010?

The DSC400 is a quad-output MEMS oscillator; the DSC2010 is a dual-output device. The DSC400 replaces two DSC2010s on the same PCB when four independent frequencies are needed, reducing component count and board area.

Is DSC400-1133Q0079KE2T compatible with 3.3V logic?

Yes — the supply range is 2.25 V to 3.6 V, so a 3.3 V rail is within spec. The LVCMOS output swings rail-to-rail, which is compatible with 3.3 V logic families.

What is the EOL risk for DSC400-1133Q0079KE2T and are there alternative manufacturers?

The part is Active with no EOL notice. Microchip is the sole source for the DSC400 series — no pin-compatible second source exists from another brand. For a dual-output alternative, the DSC2010 (also Microchip) uses the same package and supply range.