18QHTF21-21.7728-OE

Oscillators Overview

The 18QHTF21-21.7728-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 21.7728 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Oscillators Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features enable/disable functionality for power management
• Utilizes quartz technology for frequency stability

Oscillators Applications

• General purpose clock generation
• Digital signal processing systems
• Embedded controller timing

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no lead package footprint matches your PCB layout to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a precise 21.7728 MHz clock signal is required for low-voltage digital circuits. Consider the LVCMOS output swing and the enable pin utility for power-sensitive designs. Evaluate the physical dimensions of the 4-SMD package against available board space constraints to ensure compatibility with the target application environment.

Oscillators Part Context

This oscillator belongs to the standard XO series from Mercury Electronics, designed for general timing needs. The manufacturer specializes in quartz frequency control products, leveraging decades of experience in crystal manufacturing. This specific model represents a standard configuration within their SMD oscillator lineup, focusing on reliability and compact form factors.

Oscillators Replacement Considerations

Direct substitutes must match the 21.7728 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify equivalent electrical parameters such as phase noise and jitter specifications. Cross-reference pinout configurations to ensure functional compatibility without requiring PCB redesign.