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Microchip Technology DSC1122BI2-155.5200 — Crystals & Oscillators

DSC1122BI2-155.5200 MEMS XO 155.52 MHz LVPECL - Microchip

MPNDSC1122BI2-155.5200
Active

Microchip DSC1122BI2-155.5200, XO (Standard) MEMS oscillator, 155.52 MHz LVPECL output, ±25 ppm stability, 6-SMD no-lead package, -40°C to 85°C.

$3.0150Ref. price · indicative, final on quote
Microchip Technology DSC1122BI2-155.5200 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1122BI2-155.5200 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1122
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply58mA
Current - supply (Disable)22mA
Frequency155.52 MHz
Frequency stability±25ppm
Operating temperature-40°C~85°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

155.52 MHz LVPECL clock for high-speed serial links

The DSC1122BI2-155.5200 is a MEMS-based XO (Standard) oscillator delivering a 155.52 MHz LVPECL output — the exact frequency used in OC-3/STM-1 SONET/SDH and 1G Fibre Channel reference clocks. The LVPECL differential output provides the low-jitter edge rates these serial protocols require, while the MEMS resonator gives better shock and vibration immunity than a quartz crystal in the same footprint.

Microchip lists the DSC1122BI2-155.5200 as Active. This part is suitable for both new designs and ongoing production without a forced migration timeline.

Package and enable/disable function

Housed in a 6-SMD no-lead package measuring 5.00mm x 3.20mm with a seated height of 0.90mm. The Enable/Disable function lets the system shut down the oscillator output to save power — the disable current drops to 22 mA max versus 58 mA max when active. Surface-mount assembly with standard reflow profiles; no special handling beyond normal MSL precautions.

Frequently asked questions

What supply voltage range does the DSC1122BI2-155.5200 accept?

The oscillator operates from 2.25V to 3.6V, covering both 2.5V and 3.3V logic rails without an intermediate regulator. This wide range simplifies power-tree design and reduces component count.

Does the DSC1122BI2-155.5200 have a pin-compatible alternative in the same family?

The DSC1122 series shares the same 6-SMD footprint and pinout across frequency variants. For a different output type (e.g., LVDS or HCSL) or a different frequency, other DSC1122 order codes with the same package and supply range are drop-in replacements. No single direct-replacement MPN is listed; the base product number DSC1122 identifies the family for cross-reference.