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Microchip Technology DSC1121AI2-019.4400T — Crystals & Oscillators

DSC1121AI2-019.4400T MEMS Oscillator – 19.4 MHz, CMOS

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

Microchip Technology DSC1121AI2-019.4400T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121AI2-019.4400T 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

The DSC1121AI2-019.4400T is a MEMS-based XO (Standard) oscillator from Microchip's DSC1121 series, delivering a 19.4 MHz CMOS output with ±25 ppm frequency stability.

Supply voltage and output compatibility

Operating from 2.25 V to 3.6 V, the oscillator spans 2.5 V and 3.3 V logic rails without a separate level translator — a single supply covers most MCU and SoC clock inputs.

Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm, the DSC1121AI2-019.4400T fits standard oscillator footprints and is hand-solderable with a fine-tip iron or hot-air station.

Frequently asked questions

What is the frequency of DSC1121AI2-019.4400T?

The DSC1121AI2-019.4400T outputs a 19.4 MHz clock signal.

Is DSC1121AI2-019.4400T AEC-Q100 qualified?

Yes, it is rated AEC-Q100, making it suitable for automotive applications.

What is the output type of DSC1121AI2-019.4400T?

The output is CMOS, rail-to-rail, compatible with standard digital clock inputs.

What is the closest pin-compatible alternative to DSC1121AI2-019.4400T in this Crystals & Oscillators family?

Within the DSC1121 series, other frequency variants share the same package and pinout — for example, a 25 MHz or 50 MHz DSC1121 part with the same supply range and AEC-Q100 rating would be a drop-in replacement if the frequency requirement changes.