QTM750-20.000MBE-T

Overview

The QTM750-20.000MBE-T is a standard CMOS quartz oscillator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 20.0000 MHz with a frequency stability of ±50ppm. The device supports a supply voltage of 3.3V and features an enable/disable function. It is housed in a compact 4-SMD, No Lead package measuring 7.0 x 5.0 x 1.3 mm. The component is rated for operation within a temperature range of -40°C to +85°C and has a maximum supply current of 10mA.

Feature Summary

• Integrated enable and disable functionality for power management control
• CMOS output signal compatibility for digital logic interfaces
• Compact 4-SMD no-lead surface mount package design

Applications

• General-purpose clock generation in embedded systems
• Timing reference for microcontrollers and processors
• Digital communication interface synchronization

Procurement Notes

Verify the manufacturer designation carefully, as this specific part number is associated with QST in distributor catalogs, while similar model numbers may be listed under TXC Corporation. Confirm the exact operating temperature range and frequency tolerance specifications against the official datasheet prior to integration. Ensure the 3.3V supply voltage requirement aligns with the target circuit design. Validate the package dimensions and pin configuration for PCB footprint compatibility.

Selection Notes

Select this component when a precise 20 MHz timing source is required for CMOS-based digital circuits. The ±50ppm stability suits most general application needs without requiring higher-cost oven-controlled variants. The integrated enable feature allows for dynamic power saving in battery-operated devices. Consider the 7x5mm footprint constraints during layout planning.

Part Context

This oscillator belongs to the QTM750 series, which offers various frequency options within the same physical package and electrical specification framework. The series provides standardized performance levels for industrial and commercial applications. Other frequencies in this family include 4.096 MHz, 32.768 MHz, and 50.000 MHz, sharing identical package and voltage characteristics.

Replacement Considerations

Direct substitutes include other QTM750 series variants such as QTM750-32.768MBE-T or QTM750-50.000MBE-T if different frequencies are acceptable. Cross-manufacturer replacements require verification of pinout, voltage, and stability parameters.