18QHTF21-12.886-OE

Overview

The 18QHTF21-12.886-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.886 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V supply
• Compact 4-pin surface-mount package design

Applications

• General purpose clock signal generation
• Digital system timing references
• Embedded controller clock sources
• Communication interface synchronization

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application's specifications before procurement. Confirm that the 1.8V supply voltage aligns with the system power architecture. Ensure the 4-SMD package footprint matches the PCB layout design. Cross-reference the manufacturer datasheet for detailed electrical characteristics and reliability data to ensure compliance with operational standards.

Selection Notes

Select this component when a precise 12.886 MHz clock source is required for low-power digital circuits. The LVCMOS output ensures direct interfacing with standard logic families without additional level shifting. The enable/disable feature allows for dynamic power management in battery-operated devices. Consider the operating temperature range and stability requirements to ensure reliable performance under environmental conditions.

Part Context

This oscillator belongs to the Mercury Electronics 18QHTF series, which provides standard frequency solutions. The series offers various frequencies tailored for different digital applications. Mercury Electronics specializes in quartz-based timing components, leveraging decades of expertise in frequency control technology. This specific model represents a common frequency choice for microprocessor and memory clocking applications.

Replacement Considerations

Direct replacements must match the 12.886 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical parameters such as phase noise and jitter if critical. Consult the manufacturer for approved alternate part numbers within the same series or equivalent offerings from other suppliers ensuring identical form factor and function.