18QHTF21-10.000-OE

Overview

The 18QHTF21-10.000-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fundamental frequency of 10.0 MHz with a frequency stability of ±50 ppm. The device supports a supply voltage range of 1.8V to 3.3V and features an enable/disable control function. It utilizes LVCMOS output logic levels and draws a maximum supply current of 28 mA. The component is housed in a compact 4-SMD, no-lead package with dimensions of 2.0mm x 1.6mm. It is designed for operation across an extended temperature range from -40°C to +85°C.

Feature Summary

• Integrated enable/disable functionality for power management
• LVCMOS compatible output signal interface
• Compact surface-mount package design

Applications

• General purpose digital timing circuits
• Embedded system clock generation
• Consumer electronics timing references

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the operating voltage range aligns with the system power rails. Ensure the thermal environment remains within the specified -40°C to +85°C operational limits to maintain frequency stability. Cross-reference the package footprint with the PCB layout to ensure mechanical compatibility during assembly.

Selection Notes

Select this component when a low-cost, standard-frequency oscillator is required for basic timing applications. Consider the ±50 ppm stability specification for systems where high precision is not critical. Evaluate the 28 mA maximum current consumption against battery life requirements if applicable. Choose this model over higher-stability variants if cost sensitivity outweighs the need for tighter frequency tolerances or wider temperature ranges.

Part Context

This part belongs to the 18QHTF21 series of surface-mount crystal oscillators from Mercury Electronics. The series offers various standard frequencies optimized for common digital interfaces. The 'OE' suffix typically denotes a specific pinout or enable configuration variant within the manufacturer's lineup. These components are positioned as economical solutions for mass-produced electronic devices requiring reliable clock signals.

Replacement Considerations

Direct substitutes include other 10.0 MHz XO units with identical 2.0x1.6mm footprints and LVCMOS outputs. Verify equivalent electrical parameters such as supply voltage, current draw, and stability before substitution. Alternative parts from different manufacturers may require schematic adjustments if pin configurations differ. Ensure replacement components meet the same environmental temperature ratings.