QTM252J-24.000MBJ-T

Overview

The QTM252J-24.000MBJ-T is a standard CMOS quartz oscillator manufactured by TXC Corporation under the QST brand, housed in a compact 2.5x2.0 mm surface-mount package. It operates at a nominal frequency of 24 MHz with a supply voltage range supporting 3.3V logic levels. The device features a frequency stability of ±50ppm and functions within an industrial temperature range of -40°C to +105°C. Key electrical characteristics include a maximum supply current of 22mA and an enable/disable control function for power management. The output waveform is CMOS-compatible, designed for low jitter and phase noise applications in high-speed digital circuits.

Feature Summary

• Compact 2.5x2.0 mm SMD ceramic package for space-constrained designs
• Low jitter and phase noise performance suitable for high-speed interfaces
• Enable/Disable pin functionality for active power management
• Industrial-grade temperature rating for robust environmental operation

Applications

• High-speed data bus clocking (PCIe, SATA, USB)
• Wireless communication modules (WLAN, Bluetooth)
• Consumer electronics audio and video processing
• Industrial storage and server equipment timing

Procurement Notes

Verify the specific suffix 'MBJ' against the manufacturer's datasheet to confirm the exact voltage level and stability grade, as ordering codes may vary slightly between distributors. Ensure the required quantity meets the minimum reel packaging requirements typically associated with this component series. Cross-reference the lead time and availability status directly with authorized suppliers, as stock levels fluctuate. Confirm that the 3.3V supply requirement aligns with the target system's power rails before finalizing the procurement order.

Selection Notes

Select this oscillator when a small form factor is critical alongside precise timing requirements. The ±50ppm stability is sufficient for most general-purpose digital interfaces but may require tighter tolerance variants for stringent synchronization applications. Consider the enable pin utility if system-level power saving during idle states is a design priority. Ensure the PCB layout accommodates the 2.5x2.0 mm footprint and provides adequate thermal relief for the ceramic package.

Part Context

This component belongs to the QTM252 family of low-jitter CMOS oscillators from TXC/QST. The family offers various frequencies and voltage options within the same 2520 package. Similar models include QTM252J-24.000MDDQ-T for different stability grades or QTM252E series for low EMI variants. The J suffix typically denotes specific voltage and stability combinations within the product line.

Replacement Considerations

Direct substitutes must match the 24 MHz frequency, 2.5x2.0 mm package, and CMOS output. Verify compatibility with the ±50ppm stability and -40°C to +105°C temperature range. Models like QTM252J-24.000MDJ-T may offer alternative voltage options. Always validate pinout and electrical parameters against the original datasheet before substitution.