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Microchip Technology DSC400-4444Q0038KI1T — Crystals & Oscillators

DSC400-4444Q0038KI1T MEMS XO Oscillator – Microchip, HCSL

MPNDSC400-4444Q0038KI1T
Active

Microchip Technology DSC400-4444Q0038KI1T, XO (Standard) MEMS oscillator, quad HCSL outputs at 100MHz and 156.25MHz, ±50ppm stability, 2.25V~3.6V supply, -40°C~85°C, 20-VFQFN exposed pad package.

Microchip Technology DSC400-4444Q0038KI1T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC400-4444Q0038KI1T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC400
Supply voltage2.25V ~ 3.6V
Frequency stability±50ppm
Frequency - output 1100MHz, 156.25MHz
Frequency - output 2156.25MHz
Frequency - output 3156.25MHz
Frequency - output 4100MHz, 156.25MHz
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
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case20-VFQFN Exposed Pad

Product details

Quad-output MEMS clock source for dense timing trees

It replaces up to four discrete oscillators with a single 5.00mm x 3.20mm 20-VFQFN package, saving board space and reducing BOM count. Output frequencies are 100MHz and 156.25MHz, with the configuration providing two 156.25MHz lanes and two lanes that can be either 100MHz or 156.25MHz. This suits PCIe reference clock or Ethernet SerDes applications where both frequencies coexist.

The 2.25V to 3.6V supply range lets it run from a 2.5V or 3.3V rail without an extra regulator.

Package and integration note

Frequently asked questions

How can I order DSC400-4444Q0038KI1T or check stock?

Submit an RFQ through this page. The part is Active and available through independent distribution; we confirm price and lead time at quote against your BOM quantity. No on-hand stock is advertised — every order is sourced per request.

What are the exact output frequencies of DSC400-4444Q0038KI1T?

Output 1: 100MHz or 156.25MHz; Output 2: 156.25MHz; Output 3: 156.25MHz; Output 4: 100MHz or 156.25MHz. The configuration is factory-programmed — the 4444Q0038 suffix encodes this specific frequency map.

Can DSC400-4444Q0038KI1T replace a quartz-based quad oscillator?

Yes, if the original quartz oscillator uses HCSL outputs and fits a 20-VFQFN footprint. The MEMS resonator offers better shock and vibration tolerance than quartz, which matters in industrial or automotive environments. Check the supply voltage range (2.25V~3.6V) and frequency stability (±50ppm) against your existing part's specs before swapping.