QTM325-25.000MDE-T

Overview

The QTM325-25.000MDE-T is a standard CMOS crystal oscillator manufactured by QST, operating at a frequency of 25 MHz. It utilizes a 4-SMD, No Lead package with dimensions of 3.2x2.5x1 mm. The device functions at a supply voltage of 1.8 V and includes an enable/disable control feature. It maintains a frequency stability of ±50 ppm across the industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated internal temperature compensation circuitry for high-stability operation
• CMOS output signal compatible with digital logic interfaces
• Compact surface-mount design suitable for space-constrained PCB layouts

Applications

• Precision timing applications requiring stable clock references
• Embedded systems utilizing microcontrollers or processors
• Communication modules requiring accurate data transmission synchronization

Procurement Notes

Verify the specific suffix 'MDE' confirms the 1.8V supply voltage and ±50ppm stability rating against the official QST datasheet. Ensure the ordering part number matches the required enable/disable functionality and package type. Confirm RoHS compliance status as indicated in manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when a low-voltage 1.8V CMOS oscillator is required for 25 MHz applications. Consider the ±50ppm stability specification against system timing requirements. Evaluate the 4-SMD no-lead package footprint compatibility with existing PCB silkscreen and solder mask designs during the hardware selection phase.

Part Context

This model belongs to the QTM325 series of surface-mount oscillators from QST. The series offers various frequency options and voltage levels. The MDE suffix specifically denotes the 1.8V supply variant with standard CMOS output characteristics, distinguishing it from other voltage variants within the same physical package family.

Replacement Considerations

Direct substitutes include the QTM325-25.000MBD-T for 3.3V applications, though voltage differences require circuit review. Other QST models in the QTM325 series may offer alternative frequencies but must match the 3.2x2.5mm package dimensions for mechanical interchangeability.