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Microchip Technology DSC1121BI3-100.0000 — Crystals & Oscillators

DSC1121BI3-100.0000 MEMS Oscillator 100 MHz CMOS - Microchip

MPNDSC1121BI3-100.0000
Active

Microchip Technology DSC1121BI3-100.0000, XO (Standard), 100 MHz CMOS output, MEMS resonator, 2.25 V ~ 3.6 V supply, -40 °C ~ 85 °C, 6-VDFN package, ±20 ppm APR.

Microchip Technology DSC1121BI3-100.0000 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121BI3-100.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency100 MHz
Operating temperature-40°C~85°C
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN
Absolute pull range±20ppm

Product details

100 MHz MEMS clock — why the resonator type matters

The DSC1121BI3-100.0000 is a 100 MHz standard XO with a MEMS base resonator, not a quartz crystal. MEMS resonators are inherently more resistant to vibration and mechanical shock — the frequency shift under 50 g random vibration is typically an order of magnitude lower than a quartz equivalent, which matters for equipment mounted near rotating machinery or in transport. Frequency stability is ±20 ppm absolute pull range — tight enough for 100BASE-TX Ethernet and USB 2.0 full-speed clocking without external trimming.

Industrial temperature and package constraints

The 6-VDFN package measures 5.00 mm x 3.20 mm with a seated height of 0.90 mm — a low-profile, surface-mount footprint that fits tight PCB stack-ups.

Active production — no design-in risk

Frequently asked questions

Can the DSC1121BI3-100.0000 replace a standard 100 MHz quartz oscillator?

Yes, in most designs. The DSC1121BI3-100.0000 is a drop-in functional replacement for a 100 MHz CMOS quartz XO in the same 6-VDFN footprint and supply range. The MEMS resonator eliminates quartz aging drift and improves vibration tolerance, but the output timing and logic levels are identical. Confirm the Enable/Disable logic polarity matches your circuit — the DSC1121 uses standard active-low enable per the series datasheet.

Is the DSC1121BI3-100.0000 compatible with a 3.3 V supply?

Yes. The CMOS output swings rail-to-rail, meaning a 3.3 V supply produces a 3.3 V logic-high level compatible with 3.3 V LVCMOS inputs.