Microchip Technology DSC1121CI2-045.1584T, XO (Standard) MEMS oscillator, 45.1584 MHz CMOS output, ±25 ppm stability, 2.25V–3.6V supply, -40°C to 85°C, 6-VDFN package.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1121 |
| Mounting | Surface Mount |
| Supply voltage | 2.25V ~ 3.6V |
| Current - supply | 35mA |
| Current - supply (Disable) | 22mA |
| Frequency | 45.1584 MHz |
| Operating temperature | -40°C~85°C |
| Size (Dimension) | 0.126\" L x 0.098\" W (3.20mm x 2.50mm) |
| Height - seated | 0.035\" (0.90mm) |
| Output | CMOS |
| Package | Tape & Reel (TR) |
| Function | Enable/Disable |
| Base resonator | MEMS |
| Case | 6-VDFN |
| Absolute pull range | ±25ppm |
The DSC1121CI2-045.1584T is a MEMS-based XO (Standard) from Microchip's DSC1121 series, delivering a fixed 45.1584 MHz CMOS output. Supply voltage spans 2.25V to 3.6V, so it can run directly from a 2.5V or 3.3V rail without an extra LDO.
Housed in a 6-VDFN package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm max.
The output frequency is 45.1584 MHz, fixed, with CMOS logic levels.
Yes, it is a drop-in MEMS replacement for a standard 45.1584 MHz quartz oscillator in a 6-VDFN footprint. The MEMS construction provides better resistance to shock and vibration compared to quartz, and the ±25 ppm stability is comparable to many quartz XOs. Confirm the Enable/Disable logic polarity matches your circuit.