EC2645ETTS-66.666M TR

Oscillators Overview

The Ecliptek EC2645ETTS-66.666M TR is a standard quartz crystal oscillator (XO) featuring LVCMOS output and a nominal frequency of 66.666 MHz. It operates on a 3.3V supply with ±10% tolerance and provides a total frequency stability of ±50 ppm across the full industrial temperature range of -40°C to +85°C. The device utilizes a 4-pad, 5.0mm x 7.0mm ceramic surface-mount package compliant with RoHS standards. Pin 1 supports tri-state control for enable/disable functionality, allowing low-power standby modes. Maximum operating current is 18 mA, reducing to 10 μA in standby.

Oscillators Feature Summary

• Features tri-state control via Pin 1 for active operation or high-impedance standby states
• Delivers LVCMOS logic levels suitable for direct interfacing with digital circuits
• Constructed in a compact 5.0mm x 7.0mm ceramic surface-mount package
• Maintains specified frequency stability across wide industrial temperature variations

Oscillators Applications

• Industrial gateway reference clock sources
• High-speed data communication interfaces
• PCIe and Gigabit Ethernet system timing
• Battery-powered industrial equipment requiring low standby current

Oscillators Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when ordering. Confirm that the required frequency stability meets the ±50 ppm specification inclusive of all environmental conditions. Ensure the PCB layout accommodates the 5.0mm x 7.0mm footprint and provides adequate decoupling capacitance near power pins. Validate that the target application voltage aligns with the 3.3V nominal requirement.

Oscillators Selection Notes

Select this component when a 66.666 MHz clock signal is required within an industrial environment. It is appropriate for designs needing low standby current due to the integrated tri-state feature. Consider the 50ppm total stability limit against system jitter requirements. Verify compatibility with the host controller's input voltage thresholds and load capacitance specifications before finalizing the design.

Oscillators Part Context

This model belongs to the EC2645 series of industrial-grade oscillators from Ecliptek. The series offers various frequencies and stability options within the same 5x7mm ceramic package. It serves as a standardized timing solution for robust electronic systems requiring reliable performance under thermal stress and mechanical vibration.

Oscillators Replacement Considerations

Direct substitutes include other EC2645 series variants with matching pinouts and electrical characteristics. Cross-brand replacements must match the 5.0mm x 7.0mm footprint, 3.3V supply, and LVCMOS output type. Verify that any alternative part supports the required -40°C to +85°C operating range and tri-state functionality.