QTM252J-7.3728MDJ-T

Overview

The QTM252J-7.3728MDJ-T is a standard clock oscillator manufactured by TXC Corporation, operating at a nominal frequency of 7.3728MHz. It utilizes CMOS output logic and functions within a supply voltage range of 1.8V. The component exhibits a frequency stability of ±50ppm and supports an operating temperature range from -40°C to 105°C. Designed for surface-mount applications, it features a compact 4-pin CSMD package with dimensions of 2.5mm x 2.0mm. The device incorporates low jitter and phase noise characteristics suitable for precision timing requirements.

Feature Summary

• Features low jitter and phase noise performance for signal integrity
• Supports enable/disable functionality via control input
• Utilizes CMOS output logic levels
• Constructed with ceramic packaging materials

Applications

• General purpose digital circuit timing
• Embedded system clock generation
• Communication interface synchronization

Procurement Notes

Verify the manufacturer designation carefully, as the model prefix suggests QST but official documentation identifies TXC Corporation as the producer. Confirm the specific suffix MDJ-T matches the required 1.8V supply and ±50ppm stability specifications. Ensure the ordering quantity aligns with the reel packaging format typically associated with this series. Cross-reference the datasheet version to confirm the active status of the component before finalizing procurement plans.

Selection Notes

Select this component when a 7.3728MHz reference is required for systems operating at 1.8V logic levels. The wide industrial temperature range makes it suitable for demanding environments. Consider the small 2.5x2.0mm footprint for space-constrained PCB layouts. Verify that the CMOS output drive capability meets the load requirements of the destination circuit without additional buffering.

Part Context

This oscillator belongs to the QTM252J series, which represents a line of low-profile surface-mount quartz oscillators. The series is characterized by its small form factor and consistent electrical performance across various frequency options. It serves as a direct replacement for larger through-hole or older SMD oscillator packages in modern miniaturized electronic designs requiring reliable clock sources.

Replacement Considerations

Compatible substitutes include other 7.3728MHz CMOS oscillators with identical 2.5x2.0mm footprints and 1.8V operation. Verify pin compatibility and electrical parameters such as jitter and phase noise before substitution. Models like QTM252E variants may differ in voltage or temperature specs.