18QHTF21-56.649758-OE

Overview

The 18QHTF21-56.649758-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 56.649758 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable and disable functionality for power management
• Surface-mount 4-SMD no lead package design

Applications

• General purpose clock generation in electronic systems
• Timing reference for digital circuits requiring 1.8V operation
• Embedded systems utilizing LVCMOS interfaces

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 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 stable 56.649758 MHz clock signal is required within a low-voltage 1.8V environment. The LVCMOS output ensures direct interfacing with compatible digital logic families without additional level shifting. The enable/disable feature allows for dynamic power control, making it suitable for battery-operated or energy-efficient designs requiring periodic clock activation.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, characterized by its 1.8V operating voltage and small form factor. The series offers various frequency options while maintaining consistent electrical characteristics and packaging standards. Mercury Electronics leverages decades of expertise in quartz crystal manufacturing to provide reliable frequency control solutions for global electronics markets.

Replacement Considerations

Direct substitutes must match the 56.649758 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no lead package. Verify pinout compatibility and thermal characteristics. Cross-reference with other manufacturers offering identical electrical parameters and physical dimensions to ensure seamless integration without redesigning the host PCB.