SiTime Corporation Super-TCXOs SiT5543ABCWW033ITB10.000000

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. It operates from 1 MHz to 60 MHz in 1 Hz steps and features LVCMOS or clipped sinewave outputs, with supply voltages of 2.5 V, 2.8 V, 3.0 V, or 3.3 V. The device integrates on-chip power regulators to eliminate external LDOs and provides digital frequency control up to ±3200 ppm via I2C. It exhibits acceleration sensitivity of 0.01 ppb/g or 0.1 ppb/g, depending on configuration, and maintains stability against vibration, shock, and electromagnetic interference. Packaged in a 7.0 mm × 5.0 mm ceramic case, it is RoHS and REACH compliant, Pb-free, halogen-free, and antimony-free.