At 125 MHz, it delivers a clean clock for high-speed serial interfaces, Ethernet PHYs, or FPGA reference clocks without the startup issues of a quartz crystal.
Supply voltage and output compatibility
The supply voltage range spans 2.25 V to 3.6 V, covering both 2.5 V and 3.3 V logic rails.
Temperature range and frequency stability
For under-hood or outdoor telecom enclosures that see 85°C or higher, a wider-temperature variant of the DSC1121 family would be needed. Frequency stability is ±10 ppm, tight enough for 100BASE-TX Ethernet or USB 2.0 clocking without a separate PLL cleanup.
The 6-SMD no-lead package measures 7.00 mm x 5.00 mm with a seated height of 0.90 mm. The no-lead land pattern is straightforward for reflow — the pads are on the bottom, so the hot-air nozzle needs a wide enough shroud to heat the whole package evenly.
Product status is Active, meaning Microchip continues to manufacture and support this order code.