18QHTF21-13.565-OE

Overview

The 18QHTF21-13.565-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 13.565 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and includes enable/disable functionality for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable and disable control pin
• Compact 4-SMD no-lead surface mount package

Applications

• Communications equipment clock generation
• Digital signal processing timing references
• Embedded system clock sources

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against the specific application needs before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. The enable/disable feature makes it suitable for battery-powered or power-sensitive designs. Consider the 13.565 MHz frequency specifically for RFID or communication standards requiring this exact timing reference. Evaluate thermal performance within the specified operating temperature range.

Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series offers various frequencies and voltage options, all sharing the same compact 4-SMD no-lead form factor. This specific model provides a 13.565 MHz output, distinguishing it from other variants like the 13.1313 MHz or 96.768 MHz models in the same family.

Replacement Considerations

Direct substitutes must match the 13.565 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Verify equivalent electrical parameters such as phase noise and jitter if available in official datasheets. Generic replacements may not support the enable/disable function.