18QHTF21-118.272-OE

Overview

The 18QHTF21-118.272-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 118.272 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes 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

• Integrates LVCMOS output logic for digital interface compatibility
• Features enable/disable pin for active power state control
• Utilizes a leadless SMD package for automated assembly

Applications

• Digital signal processing clock sources
• Communication equipment timing references
• Embedded system master clocks

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply rail matches the system voltage levels. Ensure the PCB footprint aligns with the 4-SMD no-lead package dimensions specified in the official datasheet to prevent soldering defects during assembly.

Selection Notes

Select this component when a stable 118.272 MHz reference is required for LVCMOS-compatible digital circuits. Consider the enable/disable feature if power efficiency is critical. Evaluate the operating temperature range to ensure reliability under environmental conditions. Compare package size constraints against available board space to confirm fitment within the mechanical design limits.

Part Context

This oscillator belongs to Mercury Electronics' standard XO series, which provides reliable frequency generation for various electronic systems. The brand has established expertise in quartz crystal manufacturing since 1973. This specific model represents a common solution for timing applications where moderate stability and low cost are prioritized over high-performance specifications.

Replacement Considerations

Direct substitutes must match the 118.272 MHz frequency, LVCMOS output type, and 1.8V supply voltage. Verify that alternative packages maintain compatible pinout configurations for the 4-SMD form factor. Cross-reference thermal characteristics and aging rates to ensure performance parity in the final application.