18QHTF21-1.14688-PD

Overview

The 18QHTF21-1.14688-PD 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 a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output interface for digital logic compatibility
• Integrated standby mode for power reduction
• Surface-mount 4-SMD no-lead packaging

Applications

• Clock signal generation for embedded systems
• Timing reference for low-frequency digital circuits
• Power-sensitive portable electronic devices

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly errors during manufacturing.

Selection Notes

Select this component when a precise 1.14688 MHz timing source is required with low power consumption capabilities. The LVCMOS output is appropriate for direct interfacing with standard digital logic families. Consider the 1.8V operating voltage constraint and ensure the application can accommodate the standby feature if power efficiency is a priority.

Part Context

This part belongs to Mercury Electronic's QuikXO series, which focuses on fast-delivery CMOS output clock oscillators. Mercury Electronic is a Taiwan-based manufacturer with decades of experience in quartz crystals and frequency control products. The QuikXO line typically offers both standard and custom frequencies built to order.

Replacement Considerations

The model 18QHTF21-2.034688-PD is a related variant within the same series but operates at a different frequency of 2.034688 MHz. Direct substitution requires verifying that the alternative frequency meets the system timing requirements. Other parts in the 18QHTF21 series may share similar packaging and electrical characteristics.