18QHTF21-72.843-OE

Overview

The 18QHTF21-72.843-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 72.843 MHz and utilizes LVCMOS output logic levels. The device supports a supply voltage of 1.8V and includes an Enable/Disable control function for power management flexibility. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

• Integrates an Enable/Disable pin to allow active power state control
• Produces LVCMOS compatible output signals for digital interfacing
• Utilizes a leadless SMD package design for space-constrained layouts

Applications

• Clock generation for embedded systems
• Timing reference for communication interfaces
• Power-efficient circuit designs requiring controlled standby modes

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to ensure correct voltage and enable functionality. Confirm package dimensions and pinout compatibility with target PCB footprints prior to integration. Request updated datasheets directly from Mercury Electronics or authorized distributors to validate current production status and specifications.

Selection Notes

Choose this component when a low-voltage 1.8V operation is required alongside precise frequency stability. The integrated enable feature makes it suitable for battery-powered devices needing power conservation. Ensure the host system supports LVCMOS logic levels and can accommodate the 4-SMD form factor within available board space constraints.

Part Context

This oscillator belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The brand has manufactured quartz crystals and oscillators since 1973, establishing expertise in Taiwan's frequency control industry. This specific model represents their surface-mount offerings designed for modern electronic assemblies.

Replacement Considerations

Direct substitutes include other 72.843 MHz LVCMOS oscillators with 1.8V operation and enable pins. Verify equivalent package dimensions and electrical characteristics before swapping. Cross-reference part numbers like 25QHTF53-72.843-OE only if voltage and interface differences are acceptable.