SIT3373AC-4E3-30NU281.000000

Oscillators Overview

The SiTime SIT3373AC-4E3-30NU281.000000 is a factory-programmed MEMS voltage-controlled oscillator (VCXO) operating at 281 MHz. It features HCSL differential output signaling and requires a 3V supply voltage. The device utilizes DualMEMS temperature sensing and TurboCompensation technology for high stability. It is housed in a compact 6-SMD, No Lead Exposed Pad package with dimensions of 5.2 mm x 3.2 mm. This component is engineered for low-jitter applications, offering resistance to thermal gradients, shock, vibration, and EMI while integrating on-chip regulators to filter power supply noise.

Oscillators Feature Summary

• Integrates DualMEMS temperature sensing and TurboCompensation technology for exceptional dynamic performance and stability against environmental stressors.
• Features built-in on-chip regulators that filter power supply noise, eliminating the requirement for dedicated external LDO components.
• Provides factory-programmable flexibility for frequency, stability, voltage, output signaling, and pull range to optimize clock configurations.

Oscillators Applications

• Telecommunications infrastructure requiring stable clock sources
• Networking equipment demanding low-jitter differential signals
• Industrial systems operating in noisy or thermally variable environments

Oscillators Procurement Notes

Verify the specific ordering suffix to confirm the exact output type, voltage, and pull range parameters match the design requirements. Ensure the selected variant corresponds to the required HCSL signaling and 3V operation. Confirm compliance with RoHS standards and appropriate reflow profile specifications during assembly to maintain device integrity.

Oscillators Selection Notes

Select this VCXO when a 281 MHz frequency is required with HCSL outputs and 3V operation. Consider its MEMS-based robustness against vibration and shock compared to quartz alternatives. Evaluate the need for integrated noise filtering capabilities which may simplify the power supply design by removing external LDOs.

Oscillators Part Context

The SiT3373 series represents SiTime's ultra-low jitter differential MEMS VCXOs designed for frequencies from 220 MHz to 725 MHz. These devices replace traditional quartz oscillators by offering superior programmability and resilience. The family leverages advanced MEMS fabrication processes to deliver high reliability and consistent performance across diverse industrial and telecom applications.

Oscillators Replacement Considerations

Direct replacement requires matching the 281 MHz frequency, HCSL output, and 3V supply. Verify pinout compatibility with the existing 6-SMD footprint. Ensure the substitute supports the necessary pull range and stability specifications for the target application environment.