QTM216-25.000MDD-T

Overview

The QTM216-25.000MDD-T is a standard XO CMOS oscillator manufactured by QST, operating at a frequency of 25 MHz. It features a crystal base resonator and supports an enable/disable function via a 1.8V supply voltage. The device is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6x0.75 mm. It offers a frequency stability of ±25 ppm and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrated CMOS output stage for low EMI performance
• Dediable operation mode controlled by 1.8V logic level
• Compact surface-mount footprint suitable for space-constrained designs

Applications

• High-speed data communication interfaces
• Embedded system clock generation
• Consumer electronics timing references

Procurement Notes

Verify the specific suffix 'MDD' against the manufacturer's current datasheet to confirm pinout configuration and enable logic polarity. Ensure the 1.8V supply requirement aligns with the target system's voltage rails. Confirm that the ±25 ppm stability meets the application's jitter and timing tolerance requirements before finalizing the bill of materials.

Selection Notes

Select this component when a small form factor oscillator with enable functionality is required. Compare against the QTM216E series if lower EMI or different stability specifications are needed. Ensure the 1.8V operating voltage is compatible with the host processor or FPGA I/O standards. Consider thermal management capabilities within the -40°C to 85°C range for industrial environments.

Part Context

This part belongs to the QTM216 family of ultra-small oscillators from QST. The family includes variants with different frequencies, stabilities, and supply voltages. The QTM216 series is designed to replace discrete crystal and oscillator circuits, simplifying PCB layout and reducing component count in modern electronic devices requiring precise timing signals.

Replacement Considerations

Direct substitutes include other QTM216 variants with matching 25 MHz frequency and 1.8V enable logic, such as QTM216-25.000MDE-T, provided the stability and package compatibility are verified. Cross-manufacturer replacements require careful evaluation of pinout, voltage levels, and electrical characteristics.