Microchip DSC2044FI2-H0004, MEMS-based XO (Standard), HCSL output, 75/100/125/150 MHz selectable frequencies, 2.25-3.6 V supply, -40 to +85°C, 14-VFQFN with exposed pad.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC2044 |
| Supply voltage | 2.25V ~ 3.6V |
| Current - supply | 60mA (Typ) |
| Current - supply (Disable) | 23 mA |
| Frequency stability | ±25ppm |
| Frequency - output 1 | 75MHz, 100MHz, 125MHz, 150MHz |
| Frequency - output 2 | 75MHz, 100MHz, 125MHz, 150MHz |
| Operating temperature | -40°C~85°C |
| Height | 0.035\" (0.90mm) |
| Size (Dimension) | 0.126\" L x 0.098\" W (3.20mm x 2.50mm) |
| Output | HCSL |
| Package | Tube |
| Function | Enable/Disable |
| Base resonator | MEMS |
| Case | 14-VFQFN Exposed Pad |
The DSC2044FI2-H0004 is a MEMS-based XO from Microchip's DSC2044 series, offering four selectable output frequencies — 75 MHz, 100 MHz, 125 MHz, and 150 MHz — all routed through a single HCSL output buffer.
The 0.50 mm pitch QFN demands a solder paste stencil with 0.25 mm aperture width for the perimeter pads; the centre pad needs a 50 % area-coverage stencil to avoid solder voiding under reflow.
The DSC2044FI2-H0004 is active and available for ordering. Submit an RFQ with your target quantity; we will confirm current pricing and lead time from our independent distribution channel. No stock-holding is claimed — each order is quoted to your BOM line.
It supports four selectable output frequencies: 75 MHz, 100 MHz, 125 MHz, and 150 MHz, all via a single HCSL output.
Yes, it includes an enable/disable function. When disabled, the supply current drops to 23 mA max, allowing power gating of the oscillator in sleep modes.
No direct pin-compatible replacement relationship is documented. Both are MEMS-based XOs with similar frequency ranges, but the SiT9121 uses a different package and output type. Verify the BOM position's footprint and output logic before substituting.