QTM325-14.31818MBA-T

Overview

The QTM325-14.31818MBA-T is a surface-mount crystal oscillator manufactured by QST, operating at a nominal frequency of 14.31818 MHz. It utilizes CMOS output logic and requires a 3.3V supply voltage. The device features a frequency stability of ±25 ppm across the commercial temperature range of -10°C to +70°C. Housed in a compact 4-SMD, No Lead package with dimensions of 3.2mm x 2.5mm, it is designed for space-constrained applications. The component is RoHS compliant and lead-free, ensuring environmental safety standards are met.

Feature Summary

• CMOS output interface compatible with standard digital logic levels
• Compact 3.2mm x 2.5mm surface mount footprint for high-density PCB layouts
• Stable frequency performance within specified commercial temperature ranges

Applications

• General-purpose timing reference for embedded systems
• Clock source for microcontrollers and processors
• Data communication interfaces requiring precise synchronization

Procurement Notes

Verify the specific suffix 'A' in the part number to confirm the temperature range and load capacitance specifications, as variations exist within the QTM325 series. Ensure the design supports 3.3V operation and CMOS output requirements. Confirm RoHS compliance status with the supplier if required for specific regulatory environments. Cross-reference the manufacturer's latest datasheet for any updates on pin configuration or recommended soldering profiles.

Selection Notes

Select this component when a stable 14.31818 MHz clock signal is required for CMOS-based digital circuits. It is suitable for applications where a ±25 ppm stability is sufficient over the -10°C to +70°C range. Consider the 3.2x2.5mm package size for board space constraints. Ensure the power supply voltage matches the 3.3V requirement and that the load capacitance aligns with the system design.

Part Context

This oscillator belongs to the QTM325 series from QST, which offers various frequencies and packages. It serves as a precision timing element in electronic assemblies. The model specifies a crystal base resonator type, distinguishing it from MEMS oscillators. It is an active product currently available for procurement through authorized distributors.

Replacement Considerations

Direct substitutes include other 14.31818 MHz CMOS oscillators in 4-SMD packages with similar electrical characteristics. Verify compatibility regarding supply voltage, output logic, and frequency tolerance before substitution.