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Microchip Technology DSC1121BM2-020.0000 — Crystals & Oscillators

DSC1121BM2-020.0000 MEMS XO 20 MHz CMOS - Microchip

MPNDSC1121BM2-020.0000
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Microchip Technology DSC1121 series MEMS XO (Standard), 20 MHz CMOS output, 2.25V–3.6V supply, ±25 ppm stability, -55°C to +125°C, 6-VDFN package

Microchip Technology DSC1121BM2-020.0000 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121BM2-020.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply35mA
Frequency20 MHz
Frequency stability±25ppm
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
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN

Product details

20 MHz MEMS oscillator with wide supply tolerance

Its 2.25V to 3.6V supply range spans 2.5V and 3.3V logic rails without an extra regulator — one BOM line covers both domains. The enable/disable function (E/D) lets the output be tri-stated for power-down or test modes, controlled by a logic-level pin. This is useful in multi-clock systems where the oscillator can be gated off during sleep states without removing the supply rail.

Military temperature grade and MEMS reliability

For a 20 MHz clock, that translates to ±500 Hz maximum deviation — tight enough for most MCU and FPGA clock inputs without external trimming.

Housed in a 6-VDFN package measuring 3.20 mm × 2.50 mm with a seated height of 0.90 mm.

This is a current-design-eligible part from Microchip.

Frequently asked questions

What is the output frequency and supply voltage of the DSC1121BM2-020.0000?

The output frequency is 20 MHz with CMOS logic levels. The supply voltage range is 2.25V to 3.6V, covering both 2.5V and 3.3V rails.

Does the DSC1121BM2-020.0000 have an enable/disable function?

Yes, the part includes an Enable/Disable function. When the enable pin is driven low (or high, depending on logic polarity — check the DSC1121 datasheet for the specific logic threshold), the output enters a high-impedance state, allowing the clock to be gated off without removing the supply.

What is the closest pin-compatible alternative to the DSC1121BM2-020.0000?

For a functional equivalent, consider MEMS oscillators from SiTime (e.g., SiT8208 series) or Abracon (e.g., ASEMB series) in the same 6-VDFN footprint — but verify the enable/disable logic polarity and supply voltage range against the DSC1121 datasheet before substituting.