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Microchip Technology DSC1121CI2-049.1520 — Crystals & Oscillators

DSC1121CI2-049.1520 MEMS Oscillator – 49.152 MHz, CMOS

MPNDSC1121CI2-049.1520
Active

Microchip Technology DSC1121CI2-049.1520, a 49.152 MHz XO (Standard) with CMOS output, MEMS resonator, 2.25V–3.6V supply, -40°C to +85°C, 6-VDFN package.

Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121CI2-049.1520 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency49.152 MHz
Operating temperature-40°C~85°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN
Absolute pull range±25ppm

Product details

It outputs a CMOS-level clock, so it drives the clock input of an MCU, FPGA, or Ethernet PHY directly without needing an external level translator.

The operating supply range spans 2.25 V to 3.6 V, covering both 2.5 V and 3.3 V rails without an extra regulator. Frequency stability is ±25 ppm absolute pull range (APR). For a 49.152 MHz clock feeding a 1000BASE-T PHY or a video pixel clock, that stability keeps the jitter budget within the PHY's or serializer's input tolerance.

The 6-VDFN package measures 3.20 mm × 2.50 mm with a seated height of 0.90 mm. That small footprint leaves room for decoupling caps close to the supply pin — a 0.1 µF ceramic right at the Vdd pin is standard practice for this oscillator family. No special via-in-pad required.

Frequently asked questions

Where can I buy DSC1121CI2-049.1520 and how do I request a quote?

This part is available to order through our independent distribution channel. Submit an RFQ with your target quantity and target price — we confirm availability and current pricing at quote time. The part is active in production, so lead times are typically quoted against the order quantity.

Can DSC1121CI2-049.1520 replace a standard quartz oscillator?

Yes — it is a drop-in replacement for a 49.152 MHz quartz oscillator in the same 6-VDFN footprint, as long as the supply voltage (2.25 V–3.6 V) and output type (CMOS) match the existing design. The MEMS resonator offers better shock and vibration tolerance than quartz.

What is the difference between DSC1121 and DSC1122?

The DSC1121 series (this part) is a standard XO with CMOS output. The DSC1122 series typically offers a different output type (LVDS or HCSL) for differential clocking. For single-ended CMOS clock distribution, the DSC1121 is the correct choice.

Is DSC1121CI2-049.1520 RoHS compliant?

Microchip Technology lists this part as RoHS compliant. The 6-VDFN package uses lead-free solder terminals, suitable for RoHS-compliant assembly processes.