QTM252J-27.000MDJ-T

Overview

The QTM252J-27.000MDJ-T is a standard clock oscillator manufactured by TXC Corporation under the QST brand. It features a 27 MHz output frequency with CMOS signal type and operates on a 1.8V supply voltage. The device provides ±50ppm frequency stability across an operating temperature range of -40°C to +85°C. It utilizes a 2.5x2.0mm surface-mount package and includes enable/disable functionality. Key electrical characteristics include a maximum current consumption of 22 mA and a typical standby current of 400 µA.

Feature Summary

• Integrates enable and disable control functions for power management
• Delivers low jitter and phase noise performance suitable for precision timing applications
• Utilizes a compact 2.5x2.0mm ceramic package for space-constrained designs

Applications

• Digital signal processing systems requiring precise clock synchronization
• Communication equipment utilizing CMOS interface standards
• Portable electronic devices necessitating low power consumption modes

Procurement Notes

Verify the manufacturer designation as TXC Corporation when sourcing this component, as it is distributed under the QST brand name. Confirm the specific suffix MDJ-T corresponds to the 1.8V supply voltage and 27 MHz frequency requirements. Ensure that the operating temperature range of -40°C to +85°C aligns with your environmental specifications. Cross-reference the datasheet for pinout compatibility and ensure the CMOS output logic levels match your receiving circuitry inputs.

Selection Notes

Select this oscillator when a 27 MHz reference signal is required with strict size limitations due to its 2.5x2.0mm footprint. Consider the 1.8V supply constraint and 22 mA maximum current draw against your system's power budget. The enable/disable feature allows for dynamic power savings in battery-operated applications. Verify that the ±50ppm stability meets the timing accuracy needs of your digital interfaces compared to higher precision alternatives.

Part Context

This component belongs to the QTM252J series of quartz crystal oscillators designed for high-performance timing applications. The series offers various frequencies and supply voltages within a standardized small outline package. These oscillators are engineered to provide stable clock signals for microprocessors, memory interfaces, and communication protocols requiring low phase noise and reliable operation across industrial temperature ranges.

Replacement Considerations

Direct substitutes within the same series include QTM252J-25.000MDJ-T for 25 MHz operations and QTM252J-48.000MDJ-T for 48 MHz outputs, maintaining identical package and electrical characteristics. Other variants such as QTM252E-40.000MCJ-T offer similar form factors but differ in supply voltage and EMI specifications.