QTM750-12.288MBE-T

Overview

The QTM750-12.288MBE-T is a standard CMOS quartz oscillator manufactured by QST, operating at a frequency of 12.288 MHz. It utilizes a 4-SMD, no-lead package with dimensions of 7.0 x 5.0 mm and a height of 1.3 mm. The device functions on a 3.3 V supply voltage and offers a frequency stability of ±50 ppm across an operating temperature range of -40°C to +85°C. It supports enable/disable control via the input signal.

Feature Summary

• CMOS output signal compatible with digital logic circuits
• Integrated quartz resonator for stable timing
• Enable/Disable functionality for power management

Applications

• Digital communication systems requiring precise clock signals
• Embedded systems and microcontroller applications
• Network equipment and data transmission modules

Procurement Notes

Verify the specific suffix 'BE' against the official QST datasheet to confirm the exact voltage, stability, and package variant. Ensure the required frequency tolerance and temperature range align with system specifications before ordering. Confirm lead times and availability directly with authorized distributors as stock levels fluctuate.

Selection Notes

Select this component when a 12.288 MHz clock source is required for serial communication protocols or audio sampling rates. Compare against other QTM750 variants if different frequencies, voltages (e.g., 5.0V, 2.5V), or tighter stabilities (±25 ppm) are needed. Consider package size constraints and thermal requirements for the final assembly.

Part Context

This part belongs to the QTM750 series of surface-mount quartz oscillators from QST. The series provides various frequencies and supply voltages within a compact 7.0x5.0mm footprint. It serves as a replacement for through-hole crystals in modern PCB designs requiring higher integration and easier automated assembly.

Replacement Considerations

Direct substitutes include other QTM750 models with identical pinout and dimensions but different frequencies or voltages, such as QTM750-12.000MBE-T or QTM750-50.000MBE-T. Cross-brand replacements require verification of electrical parameters and mechanical fit.