18QHTF21-4.400-PD

Oscillators Overview

The 18QHTF21-4.400-PD is a standard crystal oscillator manufactured by Mercury Electronic Ind. Co. Ltd. It operates at a frequency of 4.4 MHz and utilizes an LVCMOS output signal format. The device requires a 1.8V supply voltage and features a standby mode for power down functionality. It is housed in a compact 4-SMD, No Lead package suitable for surface mount applications.

Oscillators Feature Summary

• Supports low voltage operation with 1.8V supply requirement
• Includes standby function for power management
• Provides LVCMOS output signal compatibility

Oscillators Applications

• Battery-powered electronic devices
• Portable consumer electronics
• General purpose timing circuits

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 4-SMD no-lead package dimensions align with the PCB footprint specifications. Ensure the 1.8V supply rail stability meets the oscillator's operational needs to maintain signal integrity during production assembly.

Oscillators Selection Notes

Select this component when a precise 4.4 MHz reference clock is required for low-power systems. The LVCMOS interface ensures compatibility with standard digital logic families. Consider the standby feature if power conservation is critical. Evaluate the physical size constraints of the 4-SMD package against available board space.

Oscillators Part Context

Mercury Electronic Ind. Co. Ltd is a Taiwan-based manufacturer specializing in frequency control products including quartz crystals and oscillators. The company has decades of experience in producing timing components for various industrial and consumer applications. This model belongs to their standard XO series designed for general electronic use.

Oscillators Replacement Considerations

Check datasheets for compatible alternatives such as the 18QHTF21-4.068-PD or 18QHTF21-18.1059-PD from the same manufacturer family, ensuring frequency differences are acceptable for the application.