SIT3373AC-2E3-33NC445.500000

Oscillators Overview

The SiTime SIT3373AC-2E3-33NC445.500000 is a MEMS Voltage-Controlled Crystal Oscillator (VCXO) operating at a nominal frequency of 445.5 MHz. It features an LVDS output interface and operates on a 3.3V supply voltage. The device is housed in a compact 6-SMD, No Lead Exposed Pad package with dimensions of 7.00mm x 5.00mm. It supports an absolute pull range of ±45 ppm and maintains a frequency stability of ±50 ppm across the industrial temperature range of -20°C to +70°C.

Oscillators Feature Summary

• Integrates multiple on-chip regulators to filter power supply noise, eliminating the need for external LDOs
• Utilizes DualMEMS temperature sensing and TurboCompensation technology for resistance to thermal gradients, shock, and vibration
• Factory programmable for specific combinations of frequency, stability, voltage, output signaling, and pull range

Oscillators Applications

• Telecommunications infrastructure requiring low-jitter clocking
• Networking equipment demanding precise frequency control
• Industrial applications operating in noisy environments

Oscillators Procurement Notes

Verify that the ordering suffix matches the required output type and voltage specifications exactly. Confirm the package variant corresponds to the 6-SMD footprint. Ensure the temperature grade aligns with the operational environment requirements. Cross-reference the part number against official SiTime documentation to confirm current production status and availability constraints before finalizing procurement plans.

Oscillators Selection Notes

Select this component when a differential LVDS output is required at 445.5 MHz with moderate pullability. Consider the integrated power regulation benefits for simplified board layouts. Evaluate the ±50 ppm stability against system timing budgets. Compare the physical dimensions against available PCB real estate constraints. Verify compatibility with existing reflow profiles and tape-and-reel handling procedures.

Oscillators Part Context

This model belongs to the SiT3373 Elite Platform family of differential MEMS VCXOs. The series covers frequencies from 1 MHz to 725 MHz, offering extensive programmability. The platform is designed to replace quartz oscillators in high-performance applications, providing superior resilience to environmental stressors while maintaining low jitter performance across wide temperature ranges.

Oscillators Replacement Considerations

Direct substitutes include other SiT3373 variants with adjusted frequencies or output types, such as SIT3373AC-1E3-33NH240.000000 for different signaling standards. Verify pinout compatibility and electrical parameters before substitution. Consult official cross-reference guides for equivalent parts from other manufacturers if necessary.