MEMS oscillator for 27 MHz reference clocks
The DSC1104BI1-027.0000T is a Microchip MEMS-based XO (Standard) oscillator delivering a fixed 27 MHz output in HCSL logic levels — a common reference for Ethernet PHYs, PCIe Gen1/2/3 root complexes, and USB 3.0 controllers that require a low-jitter differential clock.
Sourcing and lifecycle — active production
Package, supply, and temperature fit
Housed in a 6-VDFN package measuring 5.00 mm x 3.20 mm x 0.90 mm (0.197" x 0.126" x 0.035") — a standard footprint for MEMS oscillators that is pin-compatible with many quartz XO packages of the same size. The low profile suits space-constrained boards in set-top boxes, routers, and industrial controllers. Supply voltage spans 2.25 V to 3.6 V, covering common 2.5 V and 3.3 V rails without an external regulator.