4.9152 MHz MEMS oscillator with CMOS output
The DSC1121AE2-004.9152 is a fixed-frequency XO (Standard) from Microchip's DSC1121 series, built on a MEMS resonator rather than a quartz crystal. It outputs a 4.9152 MHz CMOS clock — a common baud-rate base for UART, RS-232, and basic MCU timing. The MEMS construction gives it better resistance to shock and vibration compared to quartz, and typically shorter factory lead times — a practical advantage for production scheduling.
Supply range and enable/disable function
The enable/disable pin lets the system gate the clock — useful for power-sensitive designs that idle the oscillator between active periods. Maximum supply current is 35 mA when enabled; disabling the output drops the draw to 22 mA max — not a deep-sleep figure, but a meaningful reduction for a peripheral clock.
Temperature grade and package fit
Rated for -20°C to +70°C, this is a commercial-temperature device suited to indoor equipment, office automation, and consumer electronics. It is not qualified for outdoor, automotive, or industrial extended-temperature environments. Housed in a 6-VDFN with exposed pad, 7.00 mm x 5.00 mm footprint, 0.90 mm seated height.
Active production — no lifecycle risk
Listed as Active by Microchip. This part is suitable for both new designs and ongoing volume production without supply-chain contingency planning.