EC5645ETTTS-25.000M TR

Oscillators Overview

The EC5645ETTTS-25.000M TR is a standard clock oscillator manufactured by Ecliptek, operating at a nominal frequency of 25.000 MHz. It utilizes an LVCMOS output format and requires a supply voltage of 3.3 Vdc. The device features a frequency stability of 50 ppm across the industrial temperature range of -40°C to +85°C. Packaged in a compact 2.0 mm x 2.5 mm SMD ceramic footprint with four pins, it supports a load capacitance of 15 pF. Key electrical characteristics include a maximum rise/fall time of 10 ns, a startup time of 10 ms, and RMS phase jitter of 1 ps within the 12 kHz to 20 MHz offset range.

Oscillators Feature Summary

• Provides precise timing signals via LVCMOS output compatible with standard digital logic interfaces.
• Integrates tri-state control functionality allowing for high-impedance shutdown when Pin 1 is pulled low.
• Delivers stable performance across wide industrial temperature ranges without requiring external calibration.

Oscillators Applications

• Microcontroller unit (MCU) system clocks
• Ethernet PHY reference clocks
• Low-speed ADC sampling clocks

Oscillators Procurement Notes

Verify that the specific part number matches the required frequency tolerance and temperature grade for your application. Confirm that the PCB layout adheres to the manufacturer's guidelines regarding bypass capacitor placement near power and ground pins to ensure signal integrity. Ensure the design accounts for the 3.3V supply requirement and the specific load capacitance specifications provided in the datasheet.

Oscillators Selection Notes

Select this component when a small 2.0x2.5mm footprint is required alongside industrial temperature stability. It is suitable for designs needing a fixed 25MHz clock with 50ppm total accuracy. Consider the tri-state pin configuration if power management during idle periods is necessary. Verify compatibility with the target system's input impedance and voltage levels before finalizing the bill of materials.

Oscillators Part Context

This oscillator belongs to the EC56 series, designed for applications demanding compact size and reliable timing. It serves as a direct replacement for larger traditional crystal packages while maintaining similar electrical performance profiles. The series is widely used in consumer electronics and industrial gateways where space constraints are critical.

Oscillators Replacement Considerations

Direct substitutes may include other 25MHz LVCMOS oscillators in the same 2.0x2.5mm package with comparable 50ppm stability. Ensure any alternative part matches the pinout configuration, specifically the tri-state enable function on Pin 1, to avoid redesigning the control circuitry.

Oscillators FAQ

How does the tri-state control function operate?

Pin 1 controls the output state. Connecting Pin 1 to a voltage above 90% of Vdd or leaving it floating enables the clock output. Pulling Pin 1 below 10% of Vdd disables the output, placing it in a high-impedance state.

What is the maximum RMS phase jitter specification?

The maximum RMS phase jitter is 1 ps within the 12 kHz to 20 MHz offset range.