18QHTF21-12.004-PD

Overview

The 18QHTF21-12.004-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.004 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features a standby power-down mode for energy efficiency. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface
• Standby power-down capability
• Compact SMD form factor

Applications

• General digital timing circuits
• Embedded system clock sources
• Consumer electronics devices

Procurement Notes

Verify the exact part number suffix against official Mercury Electronics documentation to ensure correct output logic and voltage specifications. Confirm that the 4-SMD package matches your PCB footprint requirements. Cross-reference the frequency tolerance and load capacitance with your circuit design needs before finalizing procurement orders.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS compatibility. The standby feature makes it suitable for battery-powered or power-sensitive designs. Ensure the operating temperature range meets environmental conditions. Compare against other models in the 18QHTF series for alternative frequencies or package options if needed.

Part Context

This oscillator belongs to the 18QHTF series from Mercury Electronics, known for quartz crystal manufacturing since 1973. The series offers various frequencies and packages. This specific model provides a 12.004 MHz output, fitting into the standard XO category. Mercury Electronics is a pioneer in Taiwan's crystal industry, providing reliable frequency control solutions.

Replacement Considerations

Check for direct substitutes within the 18QHTF series with compatible pinouts and electrical characteristics. Verify that any replacement maintains the 1.8V supply requirement and LVCMOS output type. Consult Mercury Electronics for approved cross-references to ensure performance equivalence.