18QHTF21-12.2727-OE

Overview

The 18QHTF21-12.2727-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 12.2727 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, no lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates enable and disable functionality for controlled power consumption
• Delivers LVCMOS output signal compatibility
• Utilizes a low-profile 4-SMD no lead surface mount package

Applications

• Digital clock generation in embedded systems
• Timing reference for communication interfaces
• Microcontroller system clocks

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 footprint matches the PCB layout specifications. Request the official datasheet to validate electrical characteristics and reliability standards for the intended operating environment.

Selection Notes

Select this component when a stable 12.2727 MHz reference is required with low power consumption capabilities. The integrated enable pin allows for dynamic power management during idle states. Consider the 1.8V operating voltage and LVCMOS output levels to ensure compatibility with downstream logic circuits. The small form factor supports high-density board designs.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which focuses on low-voltage, surface-mount timing solutions. The series typically offers various frequency options within a standardized package. Mercury Electronics has established itself as a manufacturer of quartz crystals and oscillators since 1973, providing frequency control products for industrial and consumer electronics markets.

Replacement Considerations

Direct substitutes must match the 12.2727 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical parameters such as current consumption and stability. Cross-reference with other manufacturers offering similar TCXO or XO specifications in identical footprints.