Skip to main content
Log in
Microchip Technology DSC1121AI5-019.4400 — Crystals & Oscillators

DSC1121AI5-019.4400 MEMS Oscillator 19.44 MHz CMOS AEC-Q100

MPNDSC1121AI5-019.4400
Active

Microchip Technology DSC1121AI5-019.4400, XO (Standard) MEMS oscillator, 19.44 MHz CMOS output, ±10 ppm frequency stability, 2.25V to 3.6V supply, AEC-Q100 qualified, -40°C to 85°C, 6-SMD package.

Microchip Technology DSC1121AI5-019.4400 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121AI5-019.4400 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency19.44 MHz
Frequency stability±10ppm
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

Supply range and package fit

Operating from 2.25V to 3.6V, this oscillator runs directly on a 2.5V or 3.3V rail without an intermediate regulator — one less component on the BOM. Housed in a 6-SMD, No Lead Exposed Pad package measuring 7.00mm x 5.00mm with a seated height of 0.90mm, the footprint is a standard 7x5 ceramic oscillator layout — no board spin needed if you are replacing a quartz XO in the same land pattern.

Listed as Active by Microchip — this part is in production and suitable for new designs.

Frequently asked questions

Can DSC1121AI5-019.4400 replace a quartz oscillator in an existing design?

Yes, in most cases. The 7.00mm x 5.00mm 6-SMD land pattern matches the standard 7x5 ceramic quartz XO footprint. The MEMS resonator offers better shock and vibration tolerance than quartz, and the ±10 ppm stability is comparable to a basic quartz XO. Verify the Enable/Disable logic polarity and the output drive strength against your receiver's input threshold — the CMOS output is 3.3V typical.