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Microchip Technology DSC400-1111Q0043KI2T — Crystals & Oscillators

DSC400-1111Q0043KI2T MEMS XO – 4 Outputs, ±25 ppm

MPNDSC400-1111Q0043KI2T
Active

Microchip DSC400 series, XO (Standard), MEMS resonator, 4 LVCMOS outputs at 25 MHz and 50 MHz, ±25 ppm stability, 2.25V–3.6V supply, -40°C to 85°C, 20-VFQFN exposed pad.

Microchip Technology DSC400-1111Q0043KI2T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC400-1111Q0043KI2T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC400
Supply voltage2.25V ~ 3.6V
Frequency stability±25ppm
Frequency - output 125Mhz, 50MHz
Frequency - output 225MHz, 50MHz
Frequency - output 325MHz, 50MHz
Frequency - output 425MHz, 50MHz
Operating temperature-40°C~85°C
Height0.035\" (0.90mm)
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
OutputLVCMOS
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case20-VFQFN Exposed Pad

Product details

Four-output MEMS oscillator for board-level clock trees

Frequency stability is held to ±25 ppm across the full -40°C to 85°C industrial temperature range, which keeps clock jitter within the margin required for 100BASE-TX and USB 2.0 interfaces without an external PLL cleanup.

Supply range and enable logic for system integration

The wide supply range of 2.25V to 3.6V lets the oscillator run from a 2.5V or 3.3V rail without a dedicated regulator, simplifying power tree design.

20-VFQFN exposed-pad layout considerations

The 5.00 mm × 3.20 mm, 0.90 mm height 20-VFQFN package with exposed pad requires a thermal via array under the pad for adequate heat transfer to the ground plane — the datasheet shows the recommended footprint and stencil aperture.

Frequently asked questions

What is the replacement for the DSC400-1111Q0043KI2T?

No official replacement or successor is listed by Microchip; the DSC400-1111Q0043KI2T remains Active and is the current production order code for a quad-output MEMS XO with ±25 ppm stability and LVCMOS outputs.

Is the DSC400-1111Q0043KI2T a MEMS oscillator?

Yes — the base resonator is MEMS, not a quartz crystal, which provides better shock and vibration immunity and faster startup compared to quartz-based XOs.

What are the output frequencies and supply voltage for the DSC400-1111Q0043KI2T?

Four LVCMOS outputs are configured as 25 MHz and 50 MHz (two outputs each). The supply voltage range is 2.25V to 3.6V, covering 2.5V and 3.3V rails without a separate LDO.