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Microchip Technology DSC1121CM1-066.6660T — Crystals & Oscillators

DSC1121CM1-066.6660T MEMS Oscillator 66.666 MHz CMOS -

MPNDSC1121CM1-066.6660T
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Microchip DSC1121 series MEMS XO, 66.666 MHz, CMOS output, 2.25V–3.6V supply, -55°C to 125°C, 6-SMD no-lead package, tape and reel.

Microchip Technology DSC1121CM1-066.6660T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121CM1-066.6660T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply22mA
Frequency66.666 MHz
Frequency stability±50ppm
Operating temperature-55°C~125°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead

Product details

66.666 MHz MEMS XO for extreme-temperature clocking

The DSC1121CM1-066.6660T: Supply voltage spans 2.25V to 3.6V, so it runs directly off a 2.5V or 3.3V rail without an extra LDO, and the Enable/Disable function lets you gate the clock for power-sensitive sleep modes.

No last-time-buy window to track. The 6-SMD no-lead package (3.20mm x 2.50mm, 0.90mm seated height) is a standard MEMS oscillator footprint — compatible with many existing layouts for quartz oscillators of the same size, though the MEMS die has different decoupling needs (see FAQ).

MEMS vs quartz — what changes on the board

Maximum supply current is 22 mA — typical for a 66.666 MHz CMOS output at 3.6V. The 50 ppm frequency stability is adequate for most serial communication and processor clocking; if your application requires tighter stability (e.g., 25 ppm or better), the DSC1121 family includes higher-grade options.

Frequently asked questions

What is the supply voltage range for the DSC1121CM1-066.6660T?

Design engineers need to verify voltage compatibility with their system.

Is the DSC1121CM1-066.6660T in stock and what is the price?

Buyers need immediate availability and cost to make procurement decisions.

What is the output type of DSC1121CM1-066.6660T? Is it CMOS?

Output type determines logic level compatibility with downstream loads.

Can the DSC1121CM1-066.6660T replace a quartz oscillator?

Maintenance techs need to know if this MEMS equivalent works as a drop-in replacement.

What is the package/case of the DSC1121CM1-066.6660T?

Physical dimensions are critical for PCB layout and mounting compatibility.

Where can I buy the DSC1121CM1-066.6660T with fast delivery?

Sourcing buyers prioritize speed of delivery to avoid production delays.