18QHTF21-13.559-PD

Overview

The 18QHTF21-13.559-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 13.559 MHz and utilizes LVCMOS output logic. The device is designed for surface mount assembly in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm. It functions on a 1.8V supply voltage and includes a standby or power-down feature to manage energy consumption during inactive periods.

Feature Summary

• Supports low-voltage operation at 1.8V for efficient power management
• Integrates a standby mode to reduce current draw when not in use
• Provides stable LVCMOS signal output for digital circuit interfacing

Applications

• Battery-powered portable electronic devices
• General-purpose digital clock generation
• Embedded system timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail matches the component's electrical specifications. Ensure the PCB footprint aligns with the 4-SMD No Lead package dimensions to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a precise 13.559 MHz reference is required for low-power applications. Consider the 1.8V operating voltage and LVCMOS compatibility with your microcontroller or FPGA I/O standards. Evaluate the physical size constraints to ensure the 2.00mm x 1.60mm package fits within the designated area on the printed circuit board layout.

Part Context

This model belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series typically offers various frequency options within a standardized small outline package. These components are engineered for reliability in consumer electronics and industrial control systems requiring stable clock signals.

Replacement Considerations

Direct substitutes must match the 13.559 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify pinout compatibility and thermal characteristics. Consult manufacturer cross-reference lists for equivalent parts from other suppliers offering identical electrical and mechanical specifications.