Microchip DSC1121 series MEMS XO, 45.158 MHz, CMOS output, 2.25V–3.6V supply, -40°C to 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 | 45.158 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 DSC1121CI2-045.1580T is a MEMS-based XO (Standard) that outputs a 45.158 MHz CMOS clock from a 2.25V to 3.6V supply rail — no external load capacitors needed, unlike a quartz resonator.
The 6-VDFN package measures 3.20 mm x 2.50 mm with a seated height of 0.90 mm — a compact footprint that fits dense PCB layouts without the height clearance issues of a through-hole can.
The DSC1121CI2-045.1580T is an active Microchip part. Submit an RFQ with your target quantity; we source through independent distribution and confirm availability and pricing at quote time. No stock-holding claim — every order is quoted to order.
No — as a MEMS XO (Standard) with CMOS output, the DSC1121CI2-045.1580T generates a rail-to-rail clock signal directly and does not need the load capacitors that a quartz crystal resonator requires.
Yes — the MEMS base resonator makes it a drop-in replacement for a quartz XO in the same 45.158 MHz frequency, same 2.25V–3.6V supply range, and same CMOS output. The 6-VDFN package footprint (3.20 mm x 2.50 mm) must match the PCB land pattern.