18QHTF21-69.550-OE

Overview

The 18QHTF21-69.550-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 69.55 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable control functionality
• Low voltage operation at 1.8V supply
• Surface-mount 4-SMD no lead package design

Applications

• General clock signal generation in electronic circuits
• Data communication interfaces requiring precise timing
• Embedded systems utilizing low-voltage logic families

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target system design before procurement. Confirm that the 1.8V supply rail is stable and within the operational limits specified in the official datasheet. Ensure the PCB footprint matches the 4-SMD no lead package dimensions to guarantee proper soldering and electrical connection during assembly.

Selection Notes

Select this component when a 69.55 MHz clock source with LVCMOS outputs is required in space-constrained designs. The 1.8V operating voltage makes it suitable for modern low-power digital logic families. Consider the enable/disable feature if power management strategies are necessary for the application. Verify temperature range specifications against the environmental conditions of the end-use product.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in frequency control products. The series includes various frequencies such as 75.55 MHz and 50.256 MHz, all sharing similar package and voltage characteristics. Mercury Electronics has been manufacturing quartz crystals and oscillators since 1973, establishing itself as a provider of precision timing components for industrial and consumer electronics.

Replacement Considerations

Direct substitutes may include other 69.55 MHz LVCMOS oscillators in 4-SMD packages from different manufacturers, provided pinouts and electrical parameters match. Cross-reference part numbers like 18QHTF21-69.550-PD for potential packaging variations. Always validate functional equivalence through official datasheets rather than assuming interchangeability based on frequency alone.