QT325G-22.5792MDHV-T

Overview

The QT325G-22.5792MDHV-T is a surface-mount crystal oscillator manufactured by QST, designed for precision timing applications in compact electronic systems. This component operates at a nominal frequency of 22.5792 MHz with a frequency stability of ±30 ppm across the industrial temperature range of -20°C to +70°C. It features a load capacitance of 8 pF and utilizes a 4-SMD, No Lead package configuration measuring 3.2 x 2.5 x 0.8 mm. The device incorporates an integrated hold-in circuit, ensuring stable oscillation without requiring external feedback components. Key electrical parameters include a series resistance of 60 Ohms maximum and a drive level suitability optimized for low-power microcontroller interfaces.

Feature Summary

• Integrated hold-in circuit eliminates the need for external feedback components
• Compact 4-SMD no-lead package suitable for high-density PCB layouts
• Industrial temperature range operation ensures reliability in varied environments
• Low profile design accommodates space-constrained consumer and industrial devices

Applications

• Microcontroller clock sources for embedded systems
• Communication module timing references
• Consumer electronics internal clocks
• Industrial control system oscillators

Procurement Notes

Verify the specific suffix codes against official QST documentation to confirm exact frequency tolerance and temperature range specifications. Ensure compatibility with reflow soldering profiles specified in the datasheet. Confirm that the 8 pF load capacitance matches the target circuit design requirements before finalizing procurement orders.

Selection Notes

Select this component when a precise 22.5792 MHz reference is required for microcontroller-based designs. Consider the ±30 ppm stability for general timing applications rather than high-precision RF links. Evaluate the 4-SMD footprint against available board space constraints and ensure the operating temperature range aligns with the end-product environmental conditions.

Part Context

The QT325G series represents QST's line of surface-mount crystals featuring integrated hold-in circuits. These components are engineered to replace traditional parallel resonant crystals by simplifying circuit design and reducing component count. The series supports various frequencies and packages, catering to modern miniaturization trends in portable and industrial electronics.

Replacement Considerations

Consult official QST substitution lists for direct equivalents. Verify that any alternative part maintains identical frequency, load capacitance, and package dimensions to ensure mechanical and electrical compatibility without redesigning the host circuit.