MEMS oscillator with 27 MHz CMOS output
This frequency is a common reference for Ethernet controllers, USB hubs, and MCU clock trees — the CMOS logic levels interface directly with the clock input of most digital ICs without external level translation.
The 2.25V to 3.6V supply range covers 2.5V and 3.3V rails commonly found in mixed-voltage designs — no separate regulator is needed for the oscillator if the rail is within that band.
Active production — sourcing to order
Listed as Active by Microchip Technology, the DSC1121CL1-027.0000 is in ongoing production and suitable for new designs. The 3.20mm x 2.50mm footprint is standard for 6-SMD oscillators — no special layout accommodation is required beyond the usual keep-out zone under the package.