18QHTF21-7.9488-OE

Overview

The 18QHTF21-7.9488-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 7.9488 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature. It is packaged in a compact 4-SMD, no lead configuration suitable for surface-mount assembly.

Feature Summary

• Integrates enable and disable functionality for power management
• Provides stable LVCMOS signal output
• Designed for surface-mount integration

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the official datasheet before procurement. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD package dimensions fit within the designated PCB footprint constraints to avoid mechanical interference during assembly.

Selection Notes

Select this component when a precise 7.9488 MHz reference is required for low-voltage logic interfaces. The integrated enable pin allows for dynamic power control in battery-operated devices. Consider the operating temperature range and stability specifications to ensure compatibility with the environmental conditions of the final application.

Part Context

This model belongs to the 18QHTF21 series of standard oscillators from Mercury Electronics. The series offers various frequency options within a consistent 4-SMD form factor. These components are designed to replace older through-hole or larger surface-mount oscillators in modern miniaturized electronic designs requiring reliable timing signals.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical pinouts but different frequencies, such as 18QHTF21-8.000-OE, provided the frequency difference is acceptable for the application.