Microchip DSC1121AI5-125.0038, XO (Standard), CMOS output, 125.0038 MHz, ±10 ppm stability, AEC-Q100, active production.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1121 |
| Mounting | Surface Mount |
| Voltage | 2.25V ~ 3.6V |
| Current - supply | 35mA |
| Current - supply (Disable) | 22mA |
| Frequency | 125.0038 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 - seated | 0.035\" (0.90mm) |
| Output | CMOS |
| Package | Tube |
| Ratings | AEC-Q100 |
| Function | Enable/Disable |
| Base resonator | MEMS |
| Case | 6-SMD, No Lead Exposed Pad |
The base product number DSC1121 shares the same MEMS resonator and CMOS output family — if this exact frequency goes obsolete in the future, the series architecture allows a frequency variant swap with a layout change only at the oscillator footprint.
Yes — it carries AEC-Q100 rating, which means it has passed the temperature cycling, ESD, and latch-up stress tests required for automotive IC qualification. Use it in under-hood or cabin applications where the ambient stays within -40°C to +85°C.
The datasheet specifies ±10 ppm across the full operating temperature range and supply voltage variation — this is the total frequency error budget, not just the temperature coefficient. For a 125 MHz clock, ±10 ppm is ±1250 Hz of absolute jitter at the output.
The CMOS output voltage swing will track the supply; ensure the receiving logic's VIH threshold is met at the lowest supply corner.