18QHTF21-12.00125-OE

Overview

The 18QHTF21-12.00125-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 12.00125 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, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output interface
• Enable/Disable control functionality
• Compact SMD no-lead package

Applications

• General electronic timing circuits
• Embedded systems clock generation
• Consumer electronics signal processing

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 footprint matches your PCB layout constraints. Check for any specific environmental ratings if operating in extreme conditions.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS interface. The enable/disable pin allows for dynamic power saving in battery-operated devices. Consider the small form factor suitable for space-constrained designs. Verify compatibility with the target microcontroller or processor input thresholds.

Part Context

This part belongs to the Mercury Electronics series of quartz-based oscillators. The manufacturer specializes in frequency control products including crystals and TCXOs. This specific model represents a standard XO variant optimized for modern digital logic levels and miniaturized packaging standards.

Replacement Considerations

Direct substitutes must match the 12.00125 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify electrical parameters such as jitter and stability specifications. Ensure the replacement supports the same enable/disable control scheme.