18QHTF21-72.500-OE

Overview

The 18QHTF21-72.500-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 72.5 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications with a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable pin for power management control
• Utilizes a lead-free 4-SMD surface-mount package

Applications

• General-purpose clock signal generation in electronic circuits
• Timing reference sources for digital systems requiring 1.8V operation
• Embedded devices utilizing surface-mount technology constraints

Procurement Notes

Verify the specific suffix OE against the manufacturer's current datasheet to confirm package dimensions and electrical tolerances. Ensure the 1.8V supply requirement aligns with the target system design. Confirm that the LVCMOS output swing matches the input requirements of the receiving component. Cross-reference the part number with official Mercury Electronics documentation to avoid counterfeit or obsolete stock issues.

Selection Notes

Select this component when a precise 72.5 MHz clock source is required for low-power digital applications. The 1.8V operating voltage makes it suitable for modern portable or battery-operated devices. The enable/disable feature allows for dynamic power saving during idle periods. Consider the 4-SMD footprint size when designing the PCB layout to ensure adequate clearance and thermal performance.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which provides stable frequency references for various electronic applications. The company specializes in quartz-based frequency control products. This specific model represents a standard configuration within their portfolio, offering a balance between performance and physical size for consumer and industrial electronics.

Replacement Considerations

Direct substitutes include other 72.5 MHz LVCMOS oscillators from Mercury Electronics with compatible 1.8V operation and similar SMD footprints. Verify that any replacement maintains the same enable/disable functionality and output drive strength. Check for equivalent frequency stability and phase noise specifications if critical timing precision is required.