MEMS oscillator at 45.158 MHz with CMOS output
The DSC1121CI2-045.1580 is a MEMS-based XO (Standard) oscillator from Microchip's DSC1121 series, delivering a 45.158 MHz clock with CMOS output — a direct-fit for replacing quartz-based oscillators in industrial and embedded designs.
Active production — no lifecycle risk
The 6-VDFN package (3.20 mm x 2.50 mm, 0.90 mm seated height) is a standard MEMS oscillator footprint, compatible with many quartz XO pads — board layout reuse is straightforward.
Enable/Disable function and supply current
The Enable/Disable pin lets the system shut down the oscillator output without removing power — useful for power-sensitive designs where the clock tree is gated during sleep modes. Maximum supply current is 35 mA when enabled; with the output disabled it drops to 22 mA max — not a deep-sleep level, but enough to save a few milliamps in a standby state.