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Microchip Technology DSC1121AI2-019.4400 — Crystals & Oscillators

DSC1121AI2-019.4400 – Microchip MEMS XO, 19.4 MHz, AEC-Q100

MPNDSC1121AI2-019.4400
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Microchip Technology DSC1121AI2-019.4400, MEMS-based XO (Standard), 19.4 MHz CMOS output, ±25 ppm stability, 2.25V–3.6V supply, AEC-Q100 qualified, -40°C to 85°C, 6-SMD package.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121AI2-019.4400 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency19.4 MHz
Frequency stability±25ppm
Operating temperature-40°C~85°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
RatingsAEC-Q100
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead Exposed Pad

Product details

MEMS oscillator for automotive clocking

Supply voltage and output compatibility

Operating from 2.25V to 3.6V, this oscillator covers both 2.5V and 3.3V logic rails without needing an external LDO — useful when the same BOM must span multiple voltage domains. The CMOS output drives standard digital loads directly; the 35 mA max supply current at 19.4 MHz gives a rough power budget for the clock tree.

Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00mm x 5.00mm with a seated height of 0.90mm, this oscillator fits standard clock footprints and requires a thermal pad for heat sinking.

Frequently asked questions

What is the frequency of DSC1121AI2-019.4400?

The output frequency is 19.4 MHz, a common clock for CAN controllers, Ethernet PHYs, and general-purpose microcontrollers.

Is DSC1121AI2-019.4400 compatible with a 3.3V supply?

Yes — the supply voltage range of 2.25V to 3.6V covers both 3.3V and 2.5V rails directly, no additional regulator needed.