Microchip Technology DSC1121 series, XO (Standard) MEMS oscillator, 45.1854 MHz, CMOS output, 2.25V~3.6V supply, -40°C~85°C, 6-VDFN 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 | 45.1854 MHz |
| 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 | Tube |
| Function | Enable/Disable |
| Base resonator | MEMS |
| Case | 6-VDFN |
| Absolute pull range | ±10ppm |
The DSC1121BI5-045.1854 is a MEMS-based XO (Standard) oscillator delivering a 45.1854 MHz CMOS output from a 2.25V to 3.6V supply rail — covering both 2.5V and 3.3V logic families without a level translator.
Housed in a 6-VDFN package measuring 5.00mm x 3.20mm with a seated height of 0.90mm. The 0.197" x 0.126" land pattern matches standard 5x3.2 mm oscillator footprints — a direct layout swap for many quartz oscillators in the same form factor.
Yes, in most cases. The 6-VDFN package shares the same 5.0mm x 3.2mm footprint as common quartz oscillators, and the CMOS output is directly compatible. The MEMS resonator offers better shock resistance and faster startup — typically under 5 ms vs 10-20 ms for quartz — but verify the Enable/Disable logic polarity matches your existing design.
Yes. The supply range is 2.25V to 3.6V, so a 3.3V rail is well within the operating window. No external regulator is needed.
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