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Microchip Technology DSC1122BE2-312.5000T — Crystals & Oscillators

DSC1122BE2-312.5000T MEMS XO, 312.5 MHz LVPECL, Active

MPNDSC1122BE2-312.5000T
Active

Microchip DSC1122BE2-312.5000T, MEMS-based XO (Standard), LVPECL output at 312.5 MHz, ±25 ppm stability, 2.25V–3.6V supply, enable/disable function, 6-VDFN package.

Microchip Technology DSC1122BE2-312.5000T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1122BE2-312.5000T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1122
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply58mA
Current - supply (Disable)22mA
Frequency312.5 MHz
Frequency stability±25ppm
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
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN

Product details

312.5 MHz LVPECL MEMS oscillator — active, production-ready

The DSC1122BE2-312.5000T is an active-production XO (Standard) from Microchip's DSC1122 series, built on a MEMS base resonator.

Supply voltage flexibility and current draw

The 2.25V to 3.6V supply range covers 2.5V and 3.3V logic rails without an external LDO—one BOM line serves multiple power domains.

Package and mounting — 6-VDFN, surface-mount

Housed in a 6-VDFN package measuring 5.00 mm x 3.20 mm with a seated height of 0.90 mm, this oscillator is a standard surface-mount footprint.

Frequently asked questions

What is the output type of DSC1122BE2-312.5000T?

LVPECL — a differential positive-referenced emitter-coupled logic level. It requires a 50-ohm termination to Vcc-2V at the receiver, not a simple pull-up. The 312.5 MHz frequency is well within LVPECL's bandwidth, and the differential swing gives good noise margin on long PCB traces.

Does DSC1122BE2-312.5000T have an enable/disable function?

Yes — the part includes an Enable/Disable pin. When disabled, the output goes into a high-impedance state and the supply current drops to 22 mA max, saving power while keeping the oscillator core running for fast restart.