QTM750P-125.000MBE-T

Overview

The QTM750P-125.000MBE-T is a standard clock oscillator manufactured by QST, designed for high-frequency digital applications. It operates at a nominal frequency of 125 MHz and utilizes LVPECL output logic for signal integrity in high-speed environments. The device is housed in a compact 6-SMD, No Lead package with dimensions of 7.0 x 5.0 x 1.3 mm. It functions on a single 3.3 VDC supply voltage and includes an enable/disable control feature for power management. The unit supports operation across an extended industrial temperature range from -40°C to +85°C.

Feature Summary

• LVPECL output interface optimized for high-speed data transmission
• Integrated enable/disable functionality for dynamic power control
• Compact surface-mount design suitable for dense PCB layouts

Applications

• High-speed serial communication interfaces
• Network infrastructure equipment
• Data acquisition systems requiring precise timing

Procurement Notes

Verify the specific output logic family (LVPECL) against system requirements, as it differs from standard CMOS or LVCMOS variants within the same package series. Confirm that the 3.3V supply voltage aligns with the target board's power distribution network. Ensure the enable pin configuration matches the host controller's GPIO capabilities for proper power sequencing.

Selection Notes

Select this component when LVPECL signaling is required for noise immunity and speed. Compare against other QTM750P variants if different frequencies are needed. Consider thermal performance within the -40°C to +85°C range for harsh environments. Verify package compatibility during layout phase due to the specific 6-SMD footprint.

Part Context

This part belongs to the QTM750P series of quartz oscillators from QST. The 'P' suffix typically denotes specific packaging or logic variations compared to the base QTM750 line. It serves as a precision timebase generator for electronic circuits requiring stable clock signals without external resonators.

Replacement Considerations

Direct substitutes include other QTM750P series oscillators with matching 125 MHz frequency and LVPECL outputs. Cross-reference with QST datasheets for equivalent packages and electrical characteristics before substitution.