MEMS resonator vs quartz — what changes on your BOM
The DSC1121DI2-024.0000 replaces a standard 24 MHz quartz oscillator with a MEMS resonator, eliminating the quartz crystal and its associated start-up time, aging drift, and mechanical shock sensitivity. The CMOS output is a direct drop-in for any 24 MHz clock input that expects a square-wave reference — no external load capacitors or feedback resistor needed. Supply voltage spans 2.25V to 3.6V, so the oscillator runs on a 2.5V, 3.0V, or 3.3V rail without a separate regulator.
Stability and temperature — outdoor and industrial margin
For a 24 MHz carrier, that is a maximum deviation of ±600 Hz — well within the capture range of most PLL-based clock trees and Ethernet PHY reference inputs. The 6-SMD no-lead package measures 2.50 mm × 2.00 mm, a common footprint that fits the same PCB land pattern as many quartz oscillators of similar size.
Sourcing and lifecycle — active with no LTB pressure
Microchip lists the DSC1121DI2-024.0000 as Active.