18QHTF21-69.000-OE

Overview

The 18QHTF21-69.000-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 69 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable control function for power management. 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/disable functionality for power optimization
• Compact 4-SMD no-lead surface mount package design

Applications

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

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the enable pin logic levels are compatible with the controlling microcontroller or GPIO to prevent unintended oscillation states during operation.

Selection Notes

Select this component when a stable 69 MHz clock source is required with low power consumption capabilities. The LVCMOS output is suitable for standard digital logic families. Consider the enable feature if dynamic power saving is necessary. The small form factor makes it appropriate for space-constrained PCB layouts compared to larger through-hole alternatives.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The manufacturer specializes in quartz-based timing devices, including crystals, oscillators, and filters. This specific model represents a single-ended output variant within their portfolio of surface-mount oscillators.

Replacement Considerations

Direct substitutes must match the 69 MHz frequency, LVCMOS output type, 1.8V supply voltage, and 4-SMD no-lead package dimensions. Verify pinout compatibility and electrical specifications from alternative manufacturers to ensure seamless integration without circuit redesign.