QTM750P-50.000MBE-T

Overview

The QTM750P-50.000MBE-T is a standard clock oscillator manufactured by QST, designed for high-performance timing applications. It operates at a nominal frequency of 50 MHz with a stability of ±50 ppm across the industrial temperature range of -40°C to +85°C. The device utilizes LVPECL output logic and requires a single 3.3V supply voltage. It features an enable/disable control function for power management flexibility. The component is housed in a compact 6-SMD, no-lead package measuring 7.0 x 5.0 mm with a height of 1.3 mm. It exhibits low phase noise characteristics, specifically 0.6 ps RMS jitter, ensuring signal integrity in sensitive digital circuits.

Feature Summary

• LVPECL output interface provides differential signaling for improved noise immunity
• Integrated enable/disable pin allows dynamic power state control
• Compact surface-mount footprint suitable for space-constrained designs
• Industrial temperature range ensures reliable operation in harsh environments

Applications

• High-speed data communication interfaces
• Network synchronization equipment
• Test and measurement instrumentation
• Telecommunications base stations

Procurement Notes

Verify the specific manufacturer designation, as this part number appears associated with both QST and TXC Corporation in public listings. Confirm the exact package dimensions and electrical specifications against the official datasheet prior to integration. Ensure that the LVPECL output requirements match the receiving circuit's input impedance and termination needs. Check for any regional distribution restrictions or lead time variations from authorized suppliers.

Selection Notes

Select this component when LVPECL outputs are required for high-speed signal transmission with low jitter performance. The 50 MHz frequency and ±50 ppm stability make it suitable for general-purpose clocking where moderate precision is sufficient. Consider the enable/disable feature if system-level power management is a priority. Compare against CMOS variants if lower cost or simpler drive requirements are acceptable, noting that LVPECL offers superior noise margins.

Part Context

This oscillator belongs to the QTM750 series, which includes various frequency and output logic options within the same 7.0x5.0mm form factor. The 'P' suffix typically denotes specific packaging or logic variations within the product line. It serves as a drop-in replacement for other 50MHz LVPECL oscillators in the same package size, provided electrical parameters such as current consumption and rise/fall times are compatible.

Replacement Considerations

Direct substitutes include other 50MHz LVPECL oscillators in 7.0x5.0mm packages from manufacturers like Epson, Nihon Dempa Kogyo, or SiTime, provided they meet the ±50ppm stability and 3.3V supply requirements. Verify pinout compatibility and electrical characteristics before substitution.