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Microchip Technology DSC400-0202Q0106KI2T — Crystals & Oscillators

DSC400-0202Q0106KI2T MEMS XO – Dual LVPECL

MPNDSC400-0202Q0106KI2T
Active

Microchip DSC400 series MEMS-based XO (Standard), dual LVPECL outputs at 153.6 MHz and 155.46875 MHz, ±25 ppm stability, 2.25 V to 3.6 V supply, -40 to 85 °C, 20-VFQFN exposed-pad package, Tape & Reel.

Microchip Technology DSC400-0202Q0106KI2T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC400-0202Q0106KI2T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC400
Voltage2.25V ~ 3.6V
Frequency stability±25ppm
Frequency - output 1153.6MHz
Frequency - output 2155.46875MHz
Operating temperature-40°C~85°C
Height0.035\" (0.90mm)
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
OutputLVPECL
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case20-VFQFN Exposed Pad

Product details

Dual LVPECL clock source for 1G/10G Ethernet and CPRI

The DSC400-0202Q0106KI2T is a MEMS-based XO that delivers two independent LVPECL clock outputs at 153.6 MHz and 155.46875 MHz — frequencies commonly used as the reference for 1G/10G Ethernet PHYs and CPRI SerDes lanes.

Supply flexibility and output termination

The wide 2.25 V to 3.6 V supply rail means the oscillator runs directly from a 2.5 V or 3.3 V rail without an intermediate LDO. LVPECL outputs require DC termination — typically 50 Ω to Vcc - 2 V — so the board must include the resistor network or AC-coupling caps before the receiver.

Microchip lists the DSC400-0202Q0106KI2T as Active.

20-VFQFN exposed-pad layout notes

The 5.00 mm x 3.20 mm, 20-lead VFQFN package has an exposed pad on the bottom.

Frequently asked questions

Can the DSC400-0202Q0106KI2T replace the DSC400-0202Q0106KI1T?

Both are DSC400-series MEMS XOs with the same package and supply range, but the output frequencies differ — the KI2T variant outputs 153.6 MHz and 155.46875 MHz, while the KI1T variant uses a different frequency pair. The pinout and footprint are identical, so a board spin is not needed, but the downstream PLL or SerDes must accept the new frequencies.

Is the DSC400-0202Q0106KI2T compatible with a 2.5 V supply?

Yes. The supply range is 2.25 V to 3.6 V, so a 2.5 V rail sits well within the operating window. The LVPECL output swing scales with the supply voltage — at 2.5 V the differential swing is approximately 800 mV, which still meets the input threshold of most LVPECL receivers.