SiTime Corporation Ruggedized MHz Super-TCXOs SiT5543AB-WW030IMA40.000000

The SiT5543 is a ruggedized precision oscillator offering ±5 ppb frequency stability from -40°C to 95°C, designed for aerospace and defense applications requiring high timing accuracy such as IEEE 1588 PTP and optical transport systems. It features a 7.0 mm x 5.0 mm ceramic package, operates at supply voltages of 2.5 V, 2.8 V, 3.0 V, or 3.3 V, and provides LVCMOS or clipped sinewave output. The device integrates on-chip regulators to eliminate the need for external LDOs, exhibits acceleration sensitivity of 0.01 ppb/g or 0.1 ppb/g depending on configuration, and supports digital frequency control up to ±3200 ppm via I2C. It is RoHS and REACH compliant, with Pb-free, Halogen-free, and Antimony-free construction. Factory programmability allows customization of frequency, voltage, and pull range to avoid long lead times associated with quartz alternatives.