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Microchip Technology DSC400-3443Q0022KE1 — Crystals & Oscillators

DSC400-3443Q0022KE1 MEMS XO – 125/100 MHz Quad HCSL/LVDS

MPNDSC400-3443Q0022KE1
Active

Microchip DSC400 series, Type XO (Standard), MEMS base resonator, four outputs: 125 MHz, 100 MHz, 100 MHz, 125 MHz, HCSL / LVDS, ±50 ppm stability, 2.25 V–3.6 V supply, -20°C to +70°C, 20-VFQFN exposed pad.

Microchip Technology DSC400-3443Q0022KE1 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC400-3443Q0022KE1 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC400
Supply voltage2.25V ~ 3.6V
Frequency stability±50ppm
Frequency - output 1125MHz
Frequency - output 2100MHz
Frequency - output 3100MHz
Frequency - output 4125MHz
Operating temperature-20°C~70°C
Height0.035\" (0.90mm)
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
OutputHCSL, LVDS
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case20-VFQFN Exposed Pad

Product details

MEMS XO with quad HCSL/LVDS outputs

It delivers four fixed-frequency outputs: two at 125 MHz and two at 100 MHz, each configurable as HCSL or LVDS signaling. The ±50 ppm frequency stability over the -20°C to +70°C commercial range is adequate for most PCIe Gen 1/2/3 reference clocks and standard Ethernet PHY XTAL inputs, but a tighter stability (±25 ppm or better) is needed for SyncE or IEEE 1588 PTP grandmaster clocks. Supply voltage spans 2.25 V to 3.6 V, covering both 2.5 V and 3.3 V rails without an intermediate regulator — one less BOM line for the power tree.

Package, layout, and thermal pad

The 20-VFQFN with exposed pad measures 5.00 mm x 3.20 mm and stands 0.90 mm tall.

Frequently asked questions

How can I order the DSC400-3443Q0022KE1 or check stock?

The DSC400-3443Q0022KE1 is an active Microchip part. Submit an RFQ with your target quantity and lead-time requirement; we source through independent distribution and confirm availability and pricing per order.

Can the DSC400-3443Q0022KE1 replace a standard quartz oscillator in my design?

Yes — the MEMS resonator is functionally interchangeable with a quartz XO of the same output frequency, signaling (HCSL or LVDS), and supply voltage. The ±50 ppm stability and -20°C to +70°C temperature range match typical commercial quartz XO specifications, so a drop-in replacement is feasible if the footprint (20-VFQFN 5.00 mm x 3.20 mm) and pad layout match.

Where can I find the datasheet and pinout for the DSC400-3443Q0022KE1?

The Microchip DSC400 series datasheet covers the full family, including the -3443Q0022KE1 variant. The datasheet includes the pinout for the 20-VFQFN package, recommended footprint, and the ordering code table that maps the suffix to output frequencies, stability, and temperature grade.