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Microchip Technology DSC1121AI1-156.2500 — Crystals & Oscillators

DSC1121AI1-156.2500 MEMS Oscillator

MPNDSC1121AI1-156.2500
Active

Microchip DSC1121AI1-156.2500, XO (Standard) MEMS oscillator, 156.25 MHz CMOS output, 2.25V-3.6V supply, -40 to 85°C, ±50 ppm stability, 6-VDFN exposed pad package.

Microchip Technology DSC1121AI1-156.2500 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121AI1-156.2500 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency156.25 MHz
Operating temperature-40°C~85°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN Exposed Pad
Absolute pull range±50ppm

Product details

The DSC1121AI1-156.2500 is a MEMS-based XO (Standard) oscillator delivering a 156.25 MHz CMOS output — a common reference frequency for 10/100/1000 Ethernet PHYs, FPGA transceiver clocks, and high-speed serial interfaces. Rated over -40 to 85°C, it suits industrial environments like factory-floor PLCs, outdoor telecom cabinets, and motor-drive control boards where quartz oscillators may drift under vibration.

Supply flexibility and frequency accuracy

Wide supply range of 2.25V to 3.6V lets it run directly from a 2.5V or 3.3V rail without an external LDO — simplifies BOM and saves board space.

Package and layout note

Frequently asked questions

How can I order DSC1121AI1-156.2500 or check availability?

Submit an RFQ for the DSC1121AI1-156.2500 with your target quantity.

Is DSC1121AI1-156.2500 compatible with a 2.5V supply rail?

Yes — the supply voltage range is 2.25V to 3.6V, so 2.5V is within the operating window without an additional regulator.

What is the frequency stability of this oscillator?

The absolute pull range (APR) is ±50 ppm, which covers the frequency accuracy needed for 1 GbE and most serial protocols operating from a 156.25 MHz reference.