18QHTF21-13.244531-OE

Overview

The 18QHTF21-13.244531-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 13.244531 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications. The component supports specific operating temperature ranges typical for commercial or industrial electronics, ensuring reliable clock signal generation in space-constrained circuit designs.

Feature Summary

• Integrates LVCMOS output logic for direct interfacing with digital systems
• Features enable/disable pin control to manage power consumption states
• Utilizes a leadless SMD package for automated surface-mount assembly

Applications

• General-purpose clock signal generation in embedded systems
• Timing reference sources for microcontroller units
• Data communication interface synchronization circuits

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions specified in the manufacturer's mechanical drawing. Check for any specific reflow soldering profile recommendations to prevent thermal damage during assembly processes.

Selection Notes

Select this component when a precise 13.244531 MHz clock source is required with low-voltage operation. The LVCMOS output is suitable for standard CMOS logic families. Consider the enable/disable functionality if power efficiency is a critical design constraint. The small form factor makes it appropriate for dense board layouts where space is limited compared to larger through-hole or standard SMD oscillators.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series typically includes various XO and TCXO variants with different frequencies and packages. Mercury Electronics has a long history in manufacturing quartz crystals and oscillators, positioning itself as a pioneer in the Taiwan frequency control industry. This specific model represents a standard XO variant within their broader portfolio of timing solutions.

Replacement Considerations

Direct substitutes must match the 13.244531 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify electrical compatibility regarding current consumption and drive strength. Mechanical footprint compatibility is essential for drop-in replacement without PCB redesign.