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Microchip Technology DSC1122CE5-047.9980 — Crystals & Oscillators

DSC1122CE5-047.9980 MEMS XO – 47.998 MHz LVPECL, ±10 ppm

MPNDSC1122CE5-047.9980
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Microchip Technology DSC1122CE5-047.9980, XO (Standard) MEMS oscillator, 47.998 MHz LVPECL output, ±10 ppm stability, 2.25–3.6 V supply, -20 to +70 °C, 6-SMD no-lead package.

Microchip Technology DSC1122CE5-047.9980 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1122CE5-047.9980 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1122
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply58mA
Current - supply (Disable)22mA
Frequency47.998 MHz
Frequency stability±10ppm
Operating temperature-20°C~70°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputLVPECL
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead

Product details

The DSC1122CE5-047.9980 is a MEMS-based XO (Standard) oscillator from Microchip's DSC1122 series, delivering a 47.998 MHz LVPECL differential output. The MEMS resonator gives it an edge over quartz in shock and vibration environments — no start-up reliability concerns from a crystal blank under mechanical stress. LVPECL output means the device drives the differential clock inputs found on high-speed FPGAs, 10G Ethernet PHYs, and SerDes transceivers directly, without external level translation.

For outdoor base stations or engine-bay electronics, a wider-temperature variant from the DSC1122 family would be needed.

Package and layout – 6-SMD no-lead

Housed in a 6-SMD no-lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm. The small footprint frees board area for dense routing around the clock tree.

Frequently asked questions

Is the DSC1122CE5-047.9980 RoHS compliant?

RoHS compliance is standard for Microchip's DSC1122 series. The evidence does not list a specific RoHS certificate, but the product is a lead-free MEMS oscillator in a 6-SMD package — confirm the latest manufacturer statement on the Microchip website for your compliance audit.

Can the DSC1122CE5-047.9980 replace a standard quartz oscillator on my board?

Yes, if the board expects a 47.998 MHz LVPECL differential clock and the supply voltage is within 2.25–3.6 V. The MEMS resonator is a drop-in replacement for quartz in the same 6-SMD footprint — no external load capacitors are needed, unlike a quartz crystal oscillator that requires them. The Enable/Disable pin may need a pull-up or pull-down depending on your existing circuit.

Does the DSC1122CE5-047.9980 require an external capacitor?

No external load capacitors are needed. As a MEMS oscillator, the output is a full-rail LVPECL signal — the internal MEMS resonator and PLL generate the frequency without the external feedback network that a quartz crystal requires.