18QHTF21-6.600-OE

Overview

The 18QHTF21-6.600-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 6.6 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an enable/disable function for power management. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0mm x 1.6mm. The component supports an operating temperature range from -40°C to 85°C and offers a frequency stability of ±50ppm.

Feature Summary

• Supports enable/disable functionality for efficient power management
• Utilizes LVCMOS output logic for digital interface compatibility
• Compact 4-SMD no-lead surface mount package design

Applications

• General purpose clock signal generation in electronic circuits
• Timing reference sources for embedded systems
• Consumer electronics requiring low-power oscillators

Procurement Notes

Verify the specific frequency tolerance and supply voltage requirements against system specifications before procurement. Confirm that the LVCMOS output level matches the receiving logic inputs. Ensure the operating temperature range meets the environmental conditions of the final application. Check for any specific ordering suffixes that may alter electrical characteristics or packaging details.

Selection Notes

Select this component when a low-voltage, small-footprint oscillator is required for timing applications. Consider the ±50ppm stability requirement relative to system jitter sensitivity. Evaluate the 1.8V supply constraint against available power rails. Compare the enable/disable feature needs against other fixed-output alternatives in the product family.

Part Context

This part belongs to the Mercury Electronics 18QHTF series of surface-mount crystal oscillators. The series provides various frequencies and supply voltages within a standardized 2.0x1.6mm package. These components are designed for high-volume consumer and industrial electronics where space constraints and power efficiency are critical design factors.

Replacement Considerations

Direct substitutes include other 6.6MHz LVCMOS oscillators in 4-SMD packages with compatible 1.8V operation. Verify pinout compatibility and thermal performance when cross-referencing with competitors. Ensure frequency stability and enable logic polarity match the original design requirements.