18QHTF21-1.14688-OE

Overview

The 18QHTF21-1.14688-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 1.14688 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an enable/disable control function 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 logic compatibility
• Integrated enable/disable control pin
• Compact 4-SMD no-lead surface mount package

Applications

• General purpose digital timing circuits
• Embedded systems clock sources
• Consumer electronics timing references

Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints to avoid assembly issues.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS interface compatibility. The enable/disable feature makes it suitable for battery-powered devices needing power conservation. Consider the small form factor if space is limited on the printed circuit board.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The manufacturer has decades of experience in Taiwan producing crystals and oscillators. This specific model represents a standard XO variant within their portfolio.

Replacement Considerations

Direct substitutes include other 1.14688 MHz LVCMOS oscillators in 4-SMD packages from manufacturers like Epson or NDK. Verify electrical parameters such as current consumption and startup time before swapping.