Skip to main content
Log in
Microchip Technology DSC1122AE2-134.4000T — Crystals & Oscillators

DSC1122AE2-134.4000T Microchip 134.4 MHz LVPECL MEMS

MPNDSC1122AE2-134.4000T
Active

Microchip Technology DSC1122AE2-134.4000T, XO (Standard) MEMS oscillator, 134.4 MHz LVPECL output, ±25 ppm stability, 2.25-3.6 V supply, -20 to +70 °C, 6-SMD No Lead Exposed Pad package, Tape & Reel.

Microchip Technology DSC1122AE2-134.4000T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1122AE2-134.4000T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1122
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply58mA
Current - supply (Disable)22mA
Frequency134.4 MHz
Frequency stability±25ppm
Operating temperature-20°C~70°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputLVPECL
PackageTape & Reel (TR)
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead Exposed Pad

Product details

134.4 MHz LVPECL MEMS oscillator — active production

Active product status means this is a current production part — no last-time-buy window to track, and it remains suitable for new designs as well as ongoing production BOMs.

Supply range and enable/disable function

6-SMD package with exposed pad

Housed in a 7.00 mm x 5.00 mm 6-SMD package with an exposed pad — the pad provides a thermal and electrical ground path. The seated height is 0.90 mm max. Standard surface-mount reflow profiles apply; the exposed pad requires a solder-paste stencil aperture matching the datasheet land pattern for reliable solder-joint formation.

Frequently asked questions

What is the frequency stability of DSC1122AE2-134.4000T?

±25 ppm across the -20 to +70 °C operating temperature range. This stability grade is typical for a standard XO and meets the jitter budget for most 1000BASE-T, SATA, and PCIe Gen1/2 reference clocks.

Can DSC1122AE2-134.4000T replace a quartz oscillator at the same frequency?

Yes, if the board expects a 134.4 MHz LVPECL input and the supply voltage falls within 2.25-3.6 V. The MEMS oscillator is pin-compatible with standard 7x5 mm SMD oscillators. The Enable/Disable function and output type must match the original socket; confirm the footprint and logic family before committing. No direct second-source or drop-in replacement is listed, but any DSC1122-series part with the same frequency, output, and package could be a functional equivalent — verify the stability and temperature grade.

Is DSC1122AE2-134.4000T compatible with a 3.3 V supply?

The LVPECL output logic levels track the supply — at 3.3 V the swing is approximately 800 mV peak-to-peak centered at Vcc - 1.3 V. Ensure the receiving device's input common-mode range accepts this.