18QHTF21-11.851776-OE

Overview

The 18QHTF21-11.851776-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 11.851776 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a leadless SMD package for automated assembly

Applications

• General clock signal generation in electronic circuits
• Timing reference for digital systems requiring 11.851776 MHz
• Embedded devices utilizing 1.8V logic levels

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 footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided by the manufacturer to ensure reliable assembly.

Selection Notes

Select this component when a stable 11.851776 MHz clock source is required for LVCMOS-compatible digital logic. Consider the 1.8V operating voltage as a primary constraint for power supply design. The enable/disable feature offers flexibility for power-sensitive applications. Evaluate the physical dimensions of the 4-SMD package against available board space.

Part Context

This part belongs to the Mercury Electronics 18QHTF series of standard crystal oscillators. The series typically offers various frequencies and voltage options within a similar small form factor. Mercury Electronics specializes in quartz-based frequency control products, leveraging decades of manufacturing experience in Taiwan to produce reliable timing components for consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 11.851776 MHz XO models from Mercury Electronics with compatible pinouts and voltages, such as variants in the same series. Cross-manufacturer replacements require matching LVCMOS output, 1.8V supply, and 4-SMD package dimensions. Verify electrical parameters and mechanical fit before substitution.