18QHTF21-12.2727-PD

Overview

The 18QHTF21-12.2727-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.2727 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features a Standby (Power Down) control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes Standby (Power Down) functionality for power management
• Designed for low voltage operation at 1.8V

Applications

• Battery-powered portable devices
• General purpose clock signal generation
• Digital circuit timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. 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 constraints. Cross-reference the manufacturer datasheet for precise electrical characteristics to guarantee reliable operation in your application environment.

Selection Notes

Select this component when a low-voltage, small-form-factor oscillator is required for 12.2727 MHz applications. The LVCMOS output ensures compatibility with standard digital logic families. Consider the standby feature if power conservation is critical. Verify that the operating temperature range meets your environmental conditions. Compare against other Mercury Electronics models in the 18QHTF21 series for alternative frequencies or package options.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics Ind. Co. Ltd. The series offers various standard frequencies with consistent 1.8V operation and LVCMOS outputs. The 'PD' suffix indicates the inclusion of a Power Down pin. These components are designed for space-constrained electronics requiring stable clock signals.

Replacement Considerations

Direct replacements within the same series include 18QHTF21-12.300-PD and 18QHTF21-12.000-PD, though frequencies differ. Ensure any substitute maintains the 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify that the replacement part supports the Standby function if required by the design.