18QHTF21-85.300-PD

Overview

The 18QHTF21-85.300-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a nominal frequency of 85.3 MHz and utilizes LVCMOS output logic levels. The device is designed for surface mount applications, featuring a compact 4-SMD, No Lead package configuration. It supports a standby or power-down mode to manage power consumption during inactive periods. The component is powered by a 1.8V supply voltage, making it suitable for low-voltage digital systems requiring precise clock signals.

Feature Summary

• Supports LVCMOS output interface for standard digital logic compatibility
• Includes standby functionality for power management
• Utilizes leadless surface mount packaging for automated assembly

Applications

• Digital signal processing clock generation
• Communication system timing references
• Embedded processor clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions provided in the official datasheet. Check for any specific reflow soldering profile recommendations to maintain component integrity during assembly processes.

Selection Notes

Select this component when a stable 85.3 MHz clock source is required for low-voltage digital circuits. Consider the LVCMOS output swing compatibility with downstream logic gates. Evaluate the thermal performance and stability characteristics relative to the operating environment. Compare the physical size constraints of the 4-SMD package against available board space. Assess the power-down feature benefits for battery-operated or energy-efficient designs.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on high-frequency surface-mount solutions. The series typically offers various frequency options within a standardized package form factor. Mercury Electronics specializes in frequency control products, providing reliable timing components for industrial and consumer electronics applications globally.

Replacement Considerations

Direct substitutes include other 85.3 MHz LVCMOS oscillators in 4-SMD packages from compatible manufacturers. Verify pinout compatibility and electrical specifications such as supply voltage and output drive strength. Cross-reference part numbers like those in the TF218 equivalent lists if available.