Skip to main content
Log in
Microchip Technology DSC1122BE1-125.0000 — Crystals & Oscillators

DSC1122BE1-125.0000 – 125 MHz LVPECL MEMS XO, Active

MPNDSC1122BE1-125.0000
Active

Microchip Technology DSC1122BE1-125.0000, XO (Standard), LVPECL output, 125 MHz, MEMS resonator, 6-SMD no-lead 5.0×3.2 mm, ±50 ppm stability, 2.25V–3.6V supply, -20°C to 70°C, Enable/Disable function, Tube package.

Microchip Technology DSC1122BE1-125.0000 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1122BE1-125.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1122
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply58mA
Current - supply (Disable)22mA
Frequency125 MHz
Frequency stability±50ppm
Operating temperature-20°C~70°C
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
Height - seated0.035\" (0.90mm)
OutputLVPECL
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead

Product details

125 MHz LVPECL clock source with MEMS reliability

Supply voltage spans 2.25V to 3.6V, so it runs from a 2.5V or 3.3V rail without an extra regulator.

Frequency stability and temperature grade

For indoor telecom switches, networking gear, or test instruments that stay climate-controlled, the margin is adequate. If the board sees outdoor or engine-bay ambient, step up to the industrial-grade DSC1122 variant.

Housed in a 6-SMD no-lead package measuring 5.00 mm × 3.20 mm with a seated height of 0.90 mm. The 0.197" × 0.126" footprint matches the standard 5×3.2 mm oscillator land pattern — no layout surprises if you are replacing a quartz XO in the same size.

Microchip lists the DSC1122BE1-125.0000 as Active.

Frequently asked questions

What is the difference between the DSC1122 and DSC1121 series?

The DSC1121 series outputs LVCMOS, while the DSC1122 series outputs LVPECL. For a 125 MHz clock, LVPECL provides a differential signal with better noise immunity and lower jitter over long PCB traces or cables — choose the DSC1122 when driving a high-speed ADC, FPGA, or SerDes reference.

Is the DSC1122BE1-125.0000 compatible with 3.3V logic?

Yes. The supply voltage range of 2.25V to 3.6V covers 3.3V rails directly. The LVPECL output swing is typically 800 mV peak-to-peak centered around Vcc – 1.3V, so it AC-couples into 3.3V CML or LVPECL receivers with the correct termination.