Microchip DSC1121 series MEMS-based XO, 24.576 MHz, CMOS output, ±25 ppm stability, 2.25–3.6 V supply, -40 to +85°C, 6-SMD no-lead package, Enable/Disable function.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1121 |
| Mounting | Surface Mount |
| Supply voltage | 2.25V ~ 3.6V |
| Current - supply | 35mA |
| Current - supply (Disable) | 22mA |
| Frequency | 24.576 MHz |
| Frequency stability | ±25ppm |
| Operating temperature | -40°C~85°C |
| Size (Dimension) | 0.197\" L x 0.126\" W (5.00mm x 3.20mm) |
| Height - seated | 0.035\" (0.90mm) |
| Output | CMOS |
| Package | Tape & Reel (TR) |
| Function | Enable/Disable |
| Base resonator | MEMS |
| Case | 6-SMD, No Lead |
On the repair bench that changes the failure signature: MEMS oscillators don't crack from vibration the way quartz does, but they are more sensitive to supply ripple — the internal PLL can jitter if the 2.25–3.6 V rail is noisy. If a board with this part shows clock jitter, check the decoupling cap first, not the oscillator itself.
The DSC1121 series is still in volume production, so you can commit the BOM line without worrying about a sudden obsolescence notice next quarter.
The evidence does not list a RoHS status, but Microchip's DSC1121 series is generally RoHS-compliant. Confirm with the datasheet or at RFQ.
The MEMS base is more resistant to shock and vibration than a quartz crystal — it won't crack if the board is dropped. The trade-off is slightly higher jitter from the internal PLL; for a 24.576 MHz CMOS clock into a standard logic input, the difference is negligible.