QTM325-25.000MDD-T

Overview

The QTM325-25.000MDD-T is a standard CMOS oscillator manufactured by QST, operating at a nominal frequency of 25 MHz. It utilizes a 4-SMD, No Lead package with dimensions of 3.20mm x 2.50mm and a maximum seated height of 1.10mm. The device supports a supply voltage of 3.3V and draws a maximum current of 10mA. Frequency stability is rated at ±25ppm over an operating temperature range of -40°C to +85°C. This component is RoHS3 compliant and REACH compliant.

Feature Summary

• Generates a precise 25 MHz clock signal using CMOS output technology.
• Features low electromagnetic interference (EMI) characteristics for reliable operation.
• Supports enable/disable functionality via the supply pin for power management.

Applications

• General-purpose digital logic timing circuits
• Microcontroller clock sources
• Communication interface synchronization

Procurement Notes

Verify that the specific suffix 'MDD' corresponds to the required frequency tolerance and temperature range specifications before procurement. Confirm that the 3.3V supply requirement aligns with the target system's voltage rails. Ensure the 4-SMD no-lead package footprint matches the PCB design guidelines. Check for RoHS3 compliance requirements in the final assembly documentation.

Selection Notes

Select this component when a stable 25 MHz reference is required for CMOS-based digital systems. The ±25ppm stability suits applications where moderate precision is sufficient. Consider the 3.3V supply constraint and ensure the 10mA current draw fits within the power budget. The compact 3.2x2.5mm size is suitable for space-constrained designs requiring surface-mount integration.

Part Context

This part belongs to the QST QTM325 series of quartz crystal oscillators. These devices are designed to replace discrete crystal and oscillator circuit components, offering a ready-made solution for clock generation. The series provides various frequency options and stability grades within a standardized small outline package format.

Replacement Considerations

Direct substitutes include the QTM325-25.000MBD-T, which shares similar electrical characteristics but may differ in specific tolerance or packaging details. Verify pin compatibility and thermal performance when swapping between variants within the same series.