Microchip DSC1001AI5-024.5760T, 24.576 MHz MEMS XO, CMOS output, ±10 ppm stability, AEC-Q100, -40°C to +85°C, 1.8V–3.3V supply, 4-SMD no-lead exposed pad package.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1001 |
| Mounting | Surface Mount |
| Voltage | 1.8V ~ 3.3V |
| Current - supply | 6.3mA |
| Current - supply (Disable) | 15µA |
| Frequency | 24.576 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 | Tape & Reel (TR) |
| Ratings | AEC-Q100 |
| Function | Standby (Power Down) |
| Base resonator | MEMS |
| Case | 4-SMD, No Lead Exposed Pad |
A single supply rail from 1.8V to 3.3V covers 1.8V, 2.5V, and 3.3V logic families without a separate regulator — simplifies the BOM for mixed-voltage designs where the oscillator sits on a shared rail with the MCU or FPGA bank.
The 4-SMD, No Lead Exposed Pad package measures 7.00 mm x 5.00 mm with a seated height of 0.90 mm max — a standard 7x5 mm ceramic oscillator footprint that matches many quartz XO land patterns, simplifying a drop-in replacement.
The MEMS resonator eliminates the need for external load capacitors and has faster startup than a quartz crystal oscillator — typically under 2 ms vs 10–20 ms for a quartz-based XO. The ±10 ppm stability is comparable to a standard quartz XO, but the MEMS part holds frequency better under vibration and has no activity dips. The trade-off is that the MEMS oscillator's phase noise floor is slightly higher than a high-end quartz OCXO, but for 24.576 MHz CMOS clocking into an MCU or FPGA, the difference is negligible.
The Standby (Power Down) function disables the output when the pin is pulled low (or high, depending on the variant — check the DSC1001 family datasheet for the logic polarity). In standby, the supply current drops to 15 µA max, and the output enters a high-impedance state. The MEMS resonator remains biased, so wake-up is faster than a full power cycle.