18QHTF21-68.670-PD

Overview

The 18QHTF21-68.670-PD is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a frequency of 68.665 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes a standby or power-down function for energy management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated standby and power-down functionality
• Compact 4-SMD no-lead surface mount package

Applications

• Digital signal processing systems
• Communication equipment timing
• Embedded control circuits

Procurement Notes

Verify the exact frequency specification against the datasheet, as similar part numbers may differ slightly (e.g., 68.665 MHz vs 68.670 MHz). Confirm the operating temperature range and supply voltage requirements match the target application design before finalizing procurement orders to ensure component compatibility.

Selection Notes

Select this component when a low-voltage 1.8V LVCMOS oscillator is required in a minimal footprint. The inclusion of a power-down feature makes it suitable for battery-operated devices. Ensure the specific frequency variant matches the system clock requirements precisely.

Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystals and oscillators. The series typically offers standard XO options with various frequencies and packaging styles, serving as foundational timing components for electronic assemblies.

Replacement Considerations

Direct substitutes include other 18QHTF21 variants with matching frequencies and LVCMOS outputs. Verify pinout and electrical characteristics before swapping with generic oscillators.