Skip to main content
Log in
Microchip Technology DSC1124AL2-100.0000 — Crystals & Oscillators

DSC1124AL2-100.0000 MEMS Oscillator 100 MHz HCSL Active -

MPNDSC1124AL2-100.0000
Active

Microchip DSC1124 series, 100 MHz XO (Standard), HCSL output, ±25 ppm stability, -40°C to 105°C, 6-SMD no-lead exposed pad, MEMS resonator.

Microchip Technology DSC1124AL2-100.0000 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1124AL2-100.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1124
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply42mA
Current - supply (Disable)22mA
Frequency100 MHz
Frequency stability±25ppm
Operating temperature-40°C~105°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputHCSL
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead Exposed Pad

Product details

100 MHz HCSL clock for PCIe reference

This frequency and logic family directly serve as the PCIe Gen1/Gen2/Gen3 reference clock — the 100 MHz HCSL signal drives the differential clock pair on the add-in card or motherboard without an external translator.

Operates from 2.25V to 3.6V, covering both 2.5V and 3.3V rails — a single BOM line works across mixed-voltage systems without a regulator swap.

Housed in a 6-SMD, no-lead exposed-pad package measuring 7.00mm x 5.00mm with a seated height of 0.90mm. The HCSL outputs require external series termination resistors (50 Ω to ground at each output) to set the differential swing; the termination is not integrated.

Listed as Active by Microchip.

Frequently asked questions

Does DSC1124AL2-100.0000 require external termination resistors for the HCSL output?

Yes. HCSL outputs are open-emitter and require a 50 Ω resistor from each output to ground, placed close to the oscillator pins. The differential swing is set by the current through these resistors; the termination is not integrated into the DSC1124.

Is DSC1124AL2-100.0000 pin-compatible with other DSC1124 frequencies?

The DSC1124 series shares the same 6-SMD footprint and pinout across all frequencies. A different frequency in the same series drops in without a PCB layout change — only the order code and the oscillator itself change.