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Microchip Technology DSC1121AL5-100.0000T — Crystals & Oscillators

DSC1121AL5-100.0000T MEMS Oscillator 100 MHz CMOS -40 to

MPNDSC1121AL5-100.0000T
Active

Microchip Technology DSC1121 series XO (Standard), 100 MHz CMOS output, MEMS resonator, ±10 ppm stability, 2.25V–3.6V supply, -40°C to +105°C, 6-SMD package.

Microchip Technology DSC1121AL5-100.0000T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121AL5-100.0000T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency100 MHz
Frequency stability±10ppm
Operating temperature-40°C~105°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead Exposed Pad

Product details

The DSC1121AL5-100.0000T is a 100 MHz fixed-frequency oscillator built on a MEMS resonator rather than a quartz crystal — the MEMS die is inherently more resistant to shock and vibration than a quartz blank, which matters when the board lives on a factory floor or inside a vehicle. The supply range spans 2.25V to 3.6V, letting it run from either a 3.3V or 2.5V rail without an extra regulator.

Frequency stability is ±10 ppm across the full temperature range — tight enough for 100BASE-TX Ethernet, USB 2.0, or general-purpose microcontroller clocking without needing a TCXO.

Frequently asked questions

Can the DSC1121AL5-100.0000T replace a quartz crystal oscillator?

Yes — the DSC1121AL5-100.0000T is a direct functional replacement for a 100 MHz quartz-based XO in the same 7.0 mm x 5.0 mm 6-SMD footprint. The MEMS resonator inside is more shock- and vibration-tolerant than quartz, which can be an advantage in portable or automotive environments. Confirm the supply voltage (2.25V–3.6V) and output type (CMOS) match your existing design.

Does the DSC1121AL5-100.0000T have an enable/disable function?

Yes, the part includes an enable/disable pin. When disabled, the maximum supply current drops to 22 mA from the 35 mA active maximum, allowing the system to gate the clock for power saving or test modes.