The DSC1121DL1-040.0000 is a 40 MHz XO (Standard) oscillator built on a MEMS resonator rather than a quartz crystal, delivering CMOS output in a 6-VDFN package measuring 2.50mm x 2.00mm.
Supply voltage and frequency stability
The supply voltage spans 2.25V to 3.6V, covering both 2.5V and 3.3V logic rails without a separate regulator — one BOM line serves across voltage domains. Frequency stability is ±50 ppm, which keeps the 40 MHz carrier within tight tolerance for UART baud-rate generation or Ethernet PHY reference clocks without external trimming.