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Microchip Technology DSC1222CI3-164M4257T — Crystals & Oscillators

DSC1222CI3-164M4257T XO 164.4257 MHz LVPECL MEMS Oscillator

MPNDSC1222CI3-164M4257T
Active

Microchip DSC1222CI3-164M4257T, XO (Standard) MEMS oscillator, 164.4257 MHz LVPECL output, ±20 ppm stability, -40°C to 85°C, 6-VDFN package.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1222CI3-164M4257T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1222
MountingSurface Mount
Voltage2.25V ~ 3.63V
Current - supply50mA (Typ)
Current - supply (Disable)23mA (Typ)
Frequency164.4257 MHz
Frequency stability±20ppm
Operating temperature-40°C~85°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputLVPECL
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN

Product details

MEMS oscillator for 164.4257 MHz LVPECL clock trees

The DSC1222CI3-164M4257T is an active MEMS-based XO delivering a 164.4257 MHz LVPECL output — a common reference frequency for high-speed serial interfaces, FPGA transceivers, and Ethernet PHYs that require a differential clock.

Supply rail and power budget

Runs from a 2.25 V to 3.63 V supply — compatible with 2.5 V and 3.3 V logic rails. The 50 mA typical supply current at 164.4257 MHz is the full-load draw; disabling the output drops it to 23 mA typical.

Frequently asked questions

Can DSC1222CI3-164M4257T replace a quartz crystal oscillator in my design?

Functionally yes — it is a drop-in XO replacement for a 164.4257 MHz LVPECL clock source. The MEMS resonator offers faster startup and better long-term frequency stability than a quartz crystal, but the output logic level (LVPECL) must match the receiver's input standard. Confirm the supply voltage range (2.25 V to 3.63 V) and the ±20 ppm stability requirement against your timing budget.