Microchip Technology DSC1121AL2-020.0000T, MEMS-based XO (Standard), 20 MHz CMOS output, AEC-Q100 qualified, -40°C to 105°C, 2.25V–3.6V supply, 6-SMD no-lead exposed-pad package.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1121 |
| Mounting | Surface Mount |
| Voltage | 2.25V ~ 3.6V |
| Current - supply | 35mA |
| Current - supply (Disable) | 22mA |
| Frequency | 20 MHz |
| Frequency stability | ±25ppm |
| Operating temperature | -40°C~105°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 | Enable/Disable |
| Base resonator | MEMS |
| Case | 6-SMD, No Lead Exposed Pad |
The wide supply range of 2.25V to 3.6V lets this oscillator run directly from a 2.5V or 3.3V rail without an extra LDO — one BOM line covers both voltage domains. Frequency stability is ±25 ppm, tight enough for 100BASE-T1 Ethernet or CAN FD bit timing where accumulated jitter must stay under 1% of the bit period.
Yes, it carries AEC-Q100 qualification, which means it has passed the automotive-grade reliability stress tests (temperature cycling, ESD, latch-up) and is suitable for deployment in engine bay, cabin, or chassis-domain electronics.
Within the DSC1121 series, the base product number DSC1121 covers multiple frequency and stability options. The DSC1121AL2-020.0000T is the 20 MHz, ±25 ppm, AEC-Q100 variant. A non-automotive sibling (same package, same pinout) would drop the AEC-Q100 rating — confirm the BOM's temperature and reliability requirement before substituting.
Yes, the supply voltage range is 2.25V to 3.6V, so a 2.5V rail is well within spec. The CMOS output swing will track the supply voltage — at 2.5V the output high level is approximately Vdd, which is compatible with 2.5V logic inputs.