18QHTF21-79.388-OE

Overview

The 18QHTF21-79.388-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 79.388 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes enable/disable control capabilities. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable and disable functionality for power management
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper soldering and mechanical stability during assembly.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS outputs. The enable/disable feature supports dynamic power saving strategies in battery-operated devices. Consider the small form factor of the 4-SMD package for space-constrained designs where standard leaded packages cannot fit within the available board area.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based frequency control products. The series typically offers various frequencies and voltage options. Mercury Electronics has been manufacturing these components since 1973, establishing itself as a supplier for crystals, oscillators, and filters in the timing industry.

Replacement Considerations

Direct substitutes include other 1.8V LVCMOS oscillators in 4-SMD packages from manufacturers like Epson or NDK, provided the pinout and frequency match exactly. Cross-reference part numbers such as those in the 18QHTF21 family with different suffixes for alternative frequencies.