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Microchip Technology DSC400-0444Q0009KI2 — Crystals & Oscillators

DSC400-0444Q0009KI2 MEMS XO – 100 MHz HCSL, Active

MPNDSC400-0444Q0009KI2
Active

Microchip DSC400 series, XO (Standard), MEMS-based, 100 MHz HCSL output, ±25 ppm stability, 2.25V–3.6V supply, -40°C to 85°C, 20-VFQFN exposed pad package

Microchip Technology DSC400-0444Q0009KI2 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC400-0444Q0009KI2 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC400
Supply voltage2.25V ~ 3.6V
Frequency stability±25ppm
Frequency - output 1100MHz
Frequency - output 2100MHz
Frequency - output 3100MHz
Operating temperature-40°C~85°C
Height0.035\" (0.90mm)
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
OutputHCSL
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case20-VFQFN Exposed Pad

Product details

MEMS oscillator with three 100 MHz HCSL lanes

HCSL (High-Speed Current Steering Logic) swings 700–800 mV differential and requires no external termination resistors when driving a 50-Ω line to ground — the output current is internally set, so the PCB trace impedance alone sets the swing.

Supply flexibility and enable/disable control

Runs from 2.25V to 3.6V, covering 2.5V and 3.3V rails without a separate LDO — the wide range absorbs rail ripple as long as the input stays above the minimum dropout of the internal regulator.

Housed in a 20-VFQFN with exposed pad (5.00mm x 3.20mm, 0.90mm height).

Frequently asked questions

What is the output frequency and type of DSC400-0444Q0009KI2?

It outputs 100 MHz on all three lanes using HCSL (High-Speed Current Steering Logic) differential signaling — the same logic family used for PCIe reference clocks.

Does DSC400-0444Q0009KI2 have an enable/disable function?

Yes, it includes an Enable/Disable pin. When disabled, the output buffers go to high-impedance (tri-state), reducing dynamic current while the MEMS core remains powered.