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Microchip Technology DSC400-4334Q0023KE2T — Crystals & Oscillators

DSC400-4334Q0023KE2T MEMS XO – 100MHz & 156.25MHz HCSL/LVDS

MPNDSC400-4334Q0023KE2T
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Microchip Technology DSC400 series MEMS XO (Standard), 100 MHz and 156.25 MHz fixed outputs, HCSL/LVDS selectable, ±25 ppm stability, 2.25V–3.6V supply, 20-VFQFN exposed pad package.

Microchip Technology DSC400-4334Q0023KE2T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC400-4334Q0023KE2T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC400
Voltage2.25V ~ 3.6V
Frequency stability±25ppm
Frequency - output 1100MHz
Frequency - output 2156.25MHz
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
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case20-VFQFN Exposed Pad

Product details

MEMS oscillator with dual reference frequencies

The DSC400-4334Q0023KE2T is a MEMS-based XO (Standard) from Microchip's DSC400 series, delivering two fixed output frequencies: 100 MHz and 156.25 MHz — common reference clocks for 1GbE and PCIe Gen1/2 interfaces. Output is selectable between HCSL and LVDS, giving the designer flexibility to drive different clock trees without changing the oscillator footprint.

Operates from 2.25 V to 3.6 V, covering common 2.5 V and 3.3 V rails — the wide input range means no additional regulator is needed when the rail sags under load.

Housed in a 20-VFQFN with exposed pad, measuring 5.00 mm x 3.20 mm and 0.90 mm tall — the exposed pad must be soldered to a thermal land on the PCB to achieve the rated thermal performance and mechanical stability.

Lifecycle and sourcing status

Frequently asked questions

What output standards does this oscillator support?

It supports both HCSL and LVDS outputs, selectable via the device configuration. This allows it to drive typical PCIe reference clock inputs (HCSL) or general-purpose high-speed logic (LVDS) from the same part.

Can the DSC400-4334Q0023KE2T run on a 2.5 V supply?

Yes, the supply voltage range is 2.25 V to 3.6 V, so both 2.5 V and 3.3 V rails are within spec. No external regulator is needed if the rail stays within that window.

What is the difference between the DSC400 and DSC600 series?

The DSC400 series (this part) offers dual independent frequency outputs with selectable HCSL/LVDS, while the DSC600 series is a single-output, lower-power MEMS oscillator. The DSC400 targets multi-frequency clock generation; the DSC600 is for single-reference applications.