18QHTF21-28.400-OE

Oscillators Overview

The 18QHTF21-28.400-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 28.4 MHz and utilizes LVCMOS output logic levels. The device is designed for low-power applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption effectively. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly processes. This oscillator provides precise timing signals for digital circuits requiring stable clock sources.

Oscillators Feature Summary

• LVCMOS output interface for direct logic compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V
• Compact surface-mount packaging

Oscillators Applications

• General purpose digital circuit timing
• Microcontroller clock sources
• Embedded system synchronization
• Consumer electronics timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Ensure the 1.8V supply rail stability meets the oscillator's operational specifications. Confirm that the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet. Check for any specific handling or storage conditions required for quartz components.

Oscillators Selection Notes

Select this model when a 28.4 MHz clock signal is required with low power consumption constraints. The LVCMOS output is suitable for standard logic families operating at 1.8V. Consider the enable pin if power management during idle states is necessary. Evaluate the thermal performance within the -40°C to 85°C operating range for your specific environment.

Oscillators Part Context

Mercury Electronics Ind. Co. Ltd specializes in frequency control products including quartz crystals and oscillators. The 18QHT series represents their standard XO line, offering reliable timing solutions. This specific part number denotes a 28.4 MHz variant within the 18QHT family, characterized by its small form factor and low voltage operation capabilities.

Oscillators Replacement Considerations

Direct replacements must match the 28.4 MHz frequency, LVCMOS output, 1.8V supply, and 4-SMD No Lead package. Verify pinout compatibility and electrical parameters such as current consumption and startup time. Cross-reference with other manufacturers' 28.4 MHz LVCMOS oscillators in similar packages.