Skip to main content
Log in
Microchip Technology DSC1224CI3-350M0000 — Crystals & Oscillators

DSC1224CI3-350M0000 Microchip MEMS XO 350 MHz HCSL Active

MPNDSC1224CI3-350M0000
Active

Microchip Technology DSC12X4 series XO (Standard) MEMS oscillator, 350 MHz HCSL output, ±20ppm stability, 2.25V–3.63V supply, -40°C to 85°C, 6-VDFN package

Microchip Technology DSC1224CI3-350M0000 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1224CI3-350M0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC12X4
MountingSurface Mount
Voltage2.25V ~ 3.63V
Current - supply40mA (Typ)
Current - supply (Disable)23mA (Typ)
Frequency350 MHz
Frequency stability±20ppm
Operating temperature-40°C ~ 85°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputHCSL
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN

Product details

350 MHz HCSL clock source — MEMS vs quartz trade-offs

Its HCSL output is the same differential signalling used in PCIe reference clocks — the 350 MHz frequency lands it in high-speed SerDes, FPGA transceiver, or networking PHY applications where a quartz oscillator at that frequency would require a PLL multiplier stage and external load capacitors. Supply voltage spans 2.25 V to 3.63 V, so the same BOM line works across 2.5 V and 3.3 V rails without a separate regulator or level translator — the oscillator draws 40 mA typical (max) when enabled, and 23 mA typical in disable mode with the output tri-stated.

Microchip lists the DSC1224CI3-350M0000 as Active.

Frequently asked questions

Is DSC1224CI3-350M0000 a direct replacement for a quartz oscillator at 350 MHz?

Yes, in most cases — it is a drop-in XO replacement that does not require the external load capacitors a quartz crystal would need. The MEMS resonator is self-contained; the HCSL output is differential and compatible with PCIe clock inputs. Verify the supply voltage (2.25 V–3.63 V) and the enable/disable logic polarity match the existing socket.

Does DSC1224CI3-350M0000 require external components like load capacitors?

No. The MEMS resonator and oscillator circuit are integrated inside the package. No external load capacitors, feedback resistors, or bias components are needed — the only external connections are the supply, ground, and the output trace.

Can DSC1224CI3-350M0000 operate at 3.3V even though it has a range?

Yes — the supply range is 2.25 V to 3.63 V, so 3.3 V is well within the operating window. The same part also runs at 2.5 V without any configuration change. The enable/disable function is active on the OE pin.

What is the recommended footprint for DSC1224CI3-350M0000?

The 6-VDFN package measures 3.20 mm x 2.50 mm with a seated height of 0.90 mm max. Microchip's datasheet provides the recommended land pattern; the pad layout is the same as for standard 6-pin DFN oscillators. The enable/disable pin (OE) is on pin 1 — leave it floating or pull high for output, ground to disable.