QTM252-75.000MDD-T

Overview

The QTM252-75.000MDD-T is a standard CMOS quartz oscillator manufactured by QST, designed for surface-mount applications with a compact 2.5x2.0 mm package. It operates at a nominal frequency of 75 MHz and utilizes a ceramic resonator element. The device functions at a supply voltage of 1.8V and provides a frequency stability of ±50 ppm across an operating temperature range of -40°C to +85°C. This component supports enable/disable control functionality and is supplied in reel packaging.

Feature Summary

• Compact 2.5x2.0 mm surface-mount footprint suitable for space-constrained designs
• CMOS output interface compatible with standard digital logic families
• Integrated enable/disable control capability for power management optimization

Applications

• General-purpose clock signal generation in embedded systems
• Timing reference for microcontrollers and processors
• Data communication interface synchronization

Procurement Notes

Verify the specific ordering suffix 'D' confirms the 1.8V supply voltage requirement and 'Q' indicates the ±50 ppm stability grade. Ensure the final character 'T' matches the required tape-and-reel delivery format. Confirm that the -40°C to +85°C industrial temperature range aligns with the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a low-profile 2.5x2.0 mm oscillator is required for 1.8V logic systems. The ±50 ppm stability is adequate for most standard serial communication protocols. Consider the enable pin feature if system-level power conservation is a design priority compared to continuously running oscillators.

Part Context

This part belongs to the QTM252 series of miniature quartz oscillators from QST. The series offers various voltage options (1.8V, 2.5V, 3.3V) and stability grades. The QTM252-75.000MDD-T specifically represents the 1.8V variant with standard industrial temperature coverage, distinguishing it from extended temperature or higher voltage models within the same family.

Replacement Considerations

Direct substitutes include other QTM252 variants with identical 2.5x2.0 mm footprints and 1.8V operation, such as QTM252-75.000MBE-T or QTM252-75.000MCJ-T, provided their respective stability and temperature ranges meet the design requirements.