QTM750-20.000MAB-T

Overview

The QTM750-20.000MAB-T is a standard CMOS crystal oscillator manufactured by QST, designed for surface-mount applications. It operates at a nominal frequency of 20 MHz with a frequency stability of ±50 ppm. The device functions within an operating temperature range of -10°C to 70°C and draws a maximum supply current of 10 mA. It utilizes a 4-SMD, no-lead package configuration, ensuring compact integration into electronic circuits requiring precise timing signals.

Feature Summary

• CMOS output signal compatibility for digital logic interfaces
• Surface-mount construction for automated assembly processes
• Standard frequency stability specification for general timing applications

Applications

• General-purpose clock generation in embedded systems
• Timing reference for microcontroller units
• Synchronization sources for digital communication interfaces

Procurement Notes

Verify the specific suffix codes against official manufacturer documentation to confirm voltage levels, enable/disable functionality, and exact temperature ranges. Ensure that the selected variant matches the required operating conditions and package dimensions for the target PCB layout. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a 20 MHz CMOS clock source is required with moderate stability requirements. Consider the -10°C to 70°C operating range suitability for commercial environments. Evaluate the 10 mA supply current against power budget constraints. Confirm mechanical fit within the 4-SMD footprint before finalizing the design.

Part Context

This oscillator belongs to the QTM750 series, which offers various frequency options and package configurations. The series provides standardized timing solutions for consumer and industrial electronics. Different suffixes indicate variations in voltage, stability, and temperature ratings within the same physical form factor.

Replacement Considerations

Direct substitutes must match the 20 MHz frequency, CMOS output type, and 4-SMD package dimensions. Verify equivalent frequency stability and operating temperature ranges. Check for compatible supply voltage and current consumption profiles to ensure circuit compatibility without redesign.